./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:50:30,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:50:30,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:50:30,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:50:30,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:50:30,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:50:30,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:50:30,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:50:30,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:50:30,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:50:30,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:50:30,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:50:30,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:50:30,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:50:30,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:50:30,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:50:30,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:50:30,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:50:30,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:50:30,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:50:30,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:50:30,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:50:30,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:50:30,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:50:30,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:50:30,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:50:30,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:50:30,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:50:30,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:50:30,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:50:30,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:50:30,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:50:30,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:50:30,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:50:30,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:50:30,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:50:30,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:50:30,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:50:30,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:50:30,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:50:30,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:50:30,501 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 01:50:30,545 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:50:30,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:50:30,546 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:50:30,546 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:50:30,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:50:30,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:50:30,547 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:50:30,547 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:50:30,547 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:50:30,548 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:50:30,548 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:50:30,548 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:50:30,548 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:50:30,548 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:50:30,548 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:50:30,549 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:50:30,549 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:50:30,549 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:50:30,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:50:30,550 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:50:30,550 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:50:30,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:50:30,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:50:30,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:50:30,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:50:30,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:50:30,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:50:30,551 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 01:50:30,551 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:50:30,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:50:30,552 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:50:30,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:50:30,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:50:30,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:50:30,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:50:30,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:50:30,556 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:50:30,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:50:30,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:50:30,557 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:50:30,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:50:30,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:50:30,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:50:30,557 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_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 [2022-11-22 01:50:30,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:50:30,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:50:30,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:50:30,890 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:50:30,891 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:50:30,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-11-22 01:50:33,927 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:50:34,159 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:50:34,160 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-11-22 01:50:34,168 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/data/ff6654c3b/65923bfaa83f4a889c3cbc38cc49270d/FLAGad9a6499f [2022-11-22 01:50:34,206 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/data/ff6654c3b/65923bfaa83f4a889c3cbc38cc49270d [2022-11-22 01:50:34,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:50:34,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:50:34,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:50:34,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:50:34,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:50:34,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:50:34" (1/1) ... [2022-11-22 01:50:34,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea45f9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:34, skipping insertion in model container [2022-11-22 01:50:34,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:50:34" (1/1) ... [2022-11-22 01:50:34,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:50:34,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:50:34,500 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_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-11-22 01:50:34,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:50:34,527 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:50:34,562 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_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-11-22 01:50:34,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:50:34,586 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:50:34,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:34 WrapperNode [2022-11-22 01:50:34,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:50:34,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:50:34,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:50:34,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:50:34,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:34" (1/1) ... [2022-11-22 01:50:34,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:34" (1/1) ... [2022-11-22 01:50:34,639 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 347 [2022-11-22 01:50:34,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:50:34,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:50:34,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:50:34,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:50:34,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:34" (1/1) ... [2022-11-22 01:50:34,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:34" (1/1) ... [2022-11-22 01:50:34,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:34" (1/1) ... [2022-11-22 01:50:34,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:34" (1/1) ... [2022-11-22 01:50:34,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:34" (1/1) ... [2022-11-22 01:50:34,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:34" (1/1) ... [2022-11-22 01:50:34,695 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:34" (1/1) ... [2022-11-22 01:50:34,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:34" (1/1) ... [2022-11-22 01:50:34,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:50:34,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:50:34,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:50:34,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:50:34,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:34" (1/1) ... [2022-11-22 01:50:34,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:50:34,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:50:34,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:50:34,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:50:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:50:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:50:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:50:34,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:50:34,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-22 01:50:34,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-22 01:50:34,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-22 01:50:34,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-22 01:50:34,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-22 01:50:34,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-22 01:50:34,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:50:34,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:50:34,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:50:34,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:50:34,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:50:34,808 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 01:50:34,964 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:50:34,966 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:50:35,705 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:50:35,721 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:50:35,722 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-22 01:50:35,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:50:35 BoogieIcfgContainer [2022-11-22 01:50:35,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:50:35,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:50:35,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:50:35,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:50:35,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:50:34" (1/3) ... [2022-11-22 01:50:35,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b492e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:50:35, skipping insertion in model container [2022-11-22 01:50:35,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:34" (2/3) ... [2022-11-22 01:50:35,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b492e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:50:35, skipping insertion in model container [2022-11-22 01:50:35,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:50:35" (3/3) ... [2022-11-22 01:50:35,733 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2022-11-22 01:50:35,747 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 01:50:35,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:50:35,757 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-22 01:50:35,757 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 01:50:35,953 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-22 01:50:36,008 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:50:36,029 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 434 places, 456 transitions, 936 flow [2022-11-22 01:50:36,032 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 434 places, 456 transitions, 936 flow [2022-11-22 01:50:36,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 456 transitions, 936 flow [2022-11-22 01:50:36,311 INFO L130 PetriNetUnfolder]: 32/453 cut-off events. [2022-11-22 01:50:36,312 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-22 01:50:36,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 453 events. 32/453 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1307 event pairs, 0 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 330. Up to 2 conditions per place. [2022-11-22 01:50:36,376 INFO L119 LiptonReduction]: Number of co-enabled transitions 62208 [2022-11-22 01:51:04,824 INFO L134 LiptonReduction]: Checked pairs total: 59388 [2022-11-22 01:51:04,824 INFO L136 LiptonReduction]: Total number of compositions: 592 [2022-11-22 01:51:04,839 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 53 transitions, 130 flow [2022-11-22 01:51:05,076 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3189 states, 2459 states have (on average 4.410736071573811) internal successors, (10846), 3188 states have internal predecessors, (10846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:05,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:51:05,107 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;@1dafc513, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:51:05,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-11-22 01:51:05,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 3189 states, 2459 states have (on average 4.410736071573811) internal successors, (10846), 3188 states have internal predecessors, (10846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:05,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 01:51:05,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:05,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 01:51:05,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:05,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:05,136 INFO L85 PathProgramCache]: Analyzing trace with hash 62275, now seen corresponding path program 1 times [2022-11-22 01:51:05,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:05,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833610833] [2022-11-22 01:51:05,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:05,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:51:05,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:05,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833610833] [2022-11-22 01:51:05,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833610833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:05,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:05,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:51:05,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826648111] [2022-11-22 01:51:05,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:05,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:51:05,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:05,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:51:05,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:05,519 INFO L87 Difference]: Start difference. First operand has 3189 states, 2459 states have (on average 4.410736071573811) internal successors, (10846), 3188 states have internal predecessors, (10846), 0 states have call successors, (0), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:05,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:05,772 INFO L93 Difference]: Finished difference Result 2619 states and 8807 transitions. [2022-11-22 01:51:05,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:51:05,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-22 01:51:05,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:05,812 INFO L225 Difference]: With dead ends: 2619 [2022-11-22 01:51:05,812 INFO L226 Difference]: Without dead ends: 2619 [2022-11-22 01:51:05,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:05,820 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:05,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:51:05,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2022-11-22 01:51:05,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 1312. [2022-11-22 01:51:05,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1095 states have (on average 4.024657534246575) internal successors, (4407), 1311 states have internal predecessors, (4407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:05,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 4407 transitions. [2022-11-22 01:51:05,959 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 4407 transitions. Word has length 2 [2022-11-22 01:51:05,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:05,960 INFO L495 AbstractCegarLoop]: Abstraction has 1312 states and 4407 transitions. [2022-11-22 01:51:05,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:05,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 4407 transitions. [2022-11-22 01:51:05,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 01:51:05,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:05,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 01:51:05,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:51:05,962 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:05,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:05,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1934613, now seen corresponding path program 1 times [2022-11-22 01:51:05,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:05,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164246734] [2022-11-22 01:51:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:05,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:51:06,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:06,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164246734] [2022-11-22 01:51:06,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164246734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:06,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:06,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:51:06,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722088216] [2022-11-22 01:51:06,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:06,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:51:06,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:06,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:51:06,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:06,073 INFO L87 Difference]: Start difference. First operand 1312 states and 4407 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:06,161 INFO L93 Difference]: Finished difference Result 1311 states and 4406 transitions. [2022-11-22 01:51:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:51:06,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-11-22 01:51:06,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:06,172 INFO L225 Difference]: With dead ends: 1311 [2022-11-22 01:51:06,172 INFO L226 Difference]: Without dead ends: 1311 [2022-11-22 01:51:06,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:06,174 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:06,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:51:06,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2022-11-22 01:51:06,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1311. [2022-11-22 01:51:06,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 1095 states have (on average 4.023744292237443) internal successors, (4406), 1310 states have internal predecessors, (4406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:06,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 4406 transitions. [2022-11-22 01:51:06,262 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 4406 transitions. Word has length 3 [2022-11-22 01:51:06,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:06,262 INFO L495 AbstractCegarLoop]: Abstraction has 1311 states and 4406 transitions. [2022-11-22 01:51:06,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:06,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 4406 transitions. [2022-11-22 01:51:06,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 01:51:06,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:06,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 01:51:06,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:51:06,265 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:06,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:06,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1934566, now seen corresponding path program 1 times [2022-11-22 01:51:06,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:06,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847254130] [2022-11-22 01:51:06,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:06,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:51:06,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:06,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847254130] [2022-11-22 01:51:06,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847254130] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:51:06,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48422262] [2022-11-22 01:51:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:06,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:06,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:51:06,449 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:51:06,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:51:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:06,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:51:06,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:51:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:51:06,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:51:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:51:06,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48422262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:51:06,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1721747041] [2022-11-22 01:51:06,704 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 01:51:06,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:51:06,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-22 01:51:06,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808112995] [2022-11-22 01:51:06,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:51:06,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:51:06,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:06,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:51:06,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:51:06,709 INFO L87 Difference]: Start difference. First operand 1311 states and 4406 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:07,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:07,139 INFO L93 Difference]: Finished difference Result 6542 states and 22012 transitions. [2022-11-22 01:51:07,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:51:07,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-22 01:51:07,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:07,189 INFO L225 Difference]: With dead ends: 6542 [2022-11-22 01:51:07,189 INFO L226 Difference]: Without dead ends: 6542 [2022-11-22 01:51:07,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:51:07,190 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 210 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:07,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 0 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:51:07,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6542 states. [2022-11-22 01:51:07,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6542 to 1314. [2022-11-22 01:51:07,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1098 states have (on average 4.018214936247723) internal successors, (4412), 1313 states have internal predecessors, (4412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:07,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 4412 transitions. [2022-11-22 01:51:07,344 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 4412 transitions. Word has length 3 [2022-11-22 01:51:07,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:07,345 INFO L495 AbstractCegarLoop]: Abstraction has 1314 states and 4412 transitions. [2022-11-22 01:51:07,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:07,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 4412 transitions. [2022-11-22 01:51:07,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:51:07,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:07,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:51:07,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 01:51:07,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:07,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:07,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:07,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1857797465, now seen corresponding path program 1 times [2022-11-22 01:51:07,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:07,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175697758] [2022-11-22 01:51:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:07,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:07,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:51:07,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:07,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175697758] [2022-11-22 01:51:07,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175697758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:07,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:07,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:51:07,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325018838] [2022-11-22 01:51:07,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:07,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:51:07,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:07,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:51:07,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:07,656 INFO L87 Difference]: Start difference. First operand 1314 states and 4412 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:07,811 INFO L93 Difference]: Finished difference Result 1744 states and 5811 transitions. [2022-11-22 01:51:07,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:51:07,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 01:51:07,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:07,832 INFO L225 Difference]: With dead ends: 1744 [2022-11-22 01:51:07,832 INFO L226 Difference]: Without dead ends: 1744 [2022-11-22 01:51:07,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:07,838 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:07,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:51:07,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2022-11-22 01:51:07,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1460. [2022-11-22 01:51:07,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1244 states have (on average 4.064308681672026) internal successors, (5056), 1459 states have internal predecessors, (5056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:07,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5056 transitions. [2022-11-22 01:51:07,909 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5056 transitions. Word has length 5 [2022-11-22 01:51:07,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:07,910 INFO L495 AbstractCegarLoop]: Abstraction has 1460 states and 5056 transitions. [2022-11-22 01:51:07,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:07,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5056 transitions. [2022-11-22 01:51:07,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:51:07,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:07,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:51:07,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:51:07,916 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:07,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:07,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1757148442, now seen corresponding path program 1 times [2022-11-22 01:51:07,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:07,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435725298] [2022-11-22 01:51:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:07,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:07,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:51:07,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:07,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435725298] [2022-11-22 01:51:07,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435725298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:07,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:07,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:51:07,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710558134] [2022-11-22 01:51:07,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:07,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:51:07,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:08,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:51:08,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:08,000 INFO L87 Difference]: Start difference. First operand 1460 states and 5056 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:08,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:08,099 INFO L93 Difference]: Finished difference Result 1460 states and 5055 transitions. [2022-11-22 01:51:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:51:08,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 01:51:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:08,108 INFO L225 Difference]: With dead ends: 1460 [2022-11-22 01:51:08,109 INFO L226 Difference]: Without dead ends: 1460 [2022-11-22 01:51:08,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:08,110 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:08,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:51:08,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2022-11-22 01:51:08,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1460. [2022-11-22 01:51:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1244 states have (on average 4.063504823151125) internal successors, (5055), 1459 states have internal predecessors, (5055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:08,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5055 transitions. [2022-11-22 01:51:08,160 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5055 transitions. Word has length 6 [2022-11-22 01:51:08,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:08,160 INFO L495 AbstractCegarLoop]: Abstraction has 1460 states and 5055 transitions. [2022-11-22 01:51:08,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:08,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5055 transitions. [2022-11-22 01:51:08,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:51:08,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:08,161 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-22 01:51:08,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:51:08,162 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:08,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:08,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1803540372, now seen corresponding path program 2 times [2022-11-22 01:51:08,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:08,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380301857] [2022-11-22 01:51:08,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:08,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:51:08,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:08,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380301857] [2022-11-22 01:51:08,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380301857] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:51:08,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967252170] [2022-11-22 01:51:08,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:51:08,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:08,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:51:08,277 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:51:08,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:51:08,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-22 01:51:08,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:51:08,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:51:08,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:51:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 01:51:08,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:51:08,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967252170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:08,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:51:08,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-22 01:51:08,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275045089] [2022-11-22 01:51:08,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:08,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:51:08,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:08,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:51:08,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:51:08,419 INFO L87 Difference]: Start difference. First operand 1460 states and 5055 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:08,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:08,491 INFO L93 Difference]: Finished difference Result 1459 states and 5054 transitions. [2022-11-22 01:51:08,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:51:08,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 01:51:08,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:08,510 INFO L225 Difference]: With dead ends: 1459 [2022-11-22 01:51:08,511 INFO L226 Difference]: Without dead ends: 1459 [2022-11-22 01:51:08,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:51:08,512 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:08,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:51:08,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2022-11-22 01:51:08,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1456. [2022-11-22 01:51:08,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1241 states have (on average 4.067687348912168) internal successors, (5048), 1455 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:08,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5048 transitions. [2022-11-22 01:51:08,579 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5048 transitions. Word has length 6 [2022-11-22 01:51:08,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:08,580 INFO L495 AbstractCegarLoop]: Abstraction has 1456 states and 5048 transitions. [2022-11-22 01:51:08,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:08,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5048 transitions. [2022-11-22 01:51:08,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:51:08,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:08,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:51:08,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:51:08,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:08,787 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:08,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:08,788 INFO L85 PathProgramCache]: Analyzing trace with hash 28790252, now seen corresponding path program 1 times [2022-11-22 01:51:08,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:08,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657535152] [2022-11-22 01:51:08,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:08,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:51:08,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:08,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657535152] [2022-11-22 01:51:08,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657535152] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:51:08,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230638647] [2022-11-22 01:51:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:08,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:08,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:51:08,883 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:51:08,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:51:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:09,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:51:09,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:51:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:51:09,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:51:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:51:09,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230638647] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:51:09,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [296974544] [2022-11-22 01:51:09,081 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 01:51:09,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:51:09,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-22 01:51:09,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860094906] [2022-11-22 01:51:09,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:51:09,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:51:09,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:09,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:51:09,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:51:09,087 INFO L87 Difference]: Start difference. First operand 1456 states and 5048 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:09,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:09,220 INFO L93 Difference]: Finished difference Result 1458 states and 5050 transitions. [2022-11-22 01:51:09,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:51:09,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 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 [2022-11-22 01:51:09,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:09,231 INFO L225 Difference]: With dead ends: 1458 [2022-11-22 01:51:09,232 INFO L226 Difference]: Without dead ends: 1458 [2022-11-22 01:51:09,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:51:09,233 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:09,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:51:09,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2022-11-22 01:51:09,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1458. [2022-11-22 01:51:09,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1243 states have (on average 4.062751407884151) internal successors, (5050), 1457 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:09,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5050 transitions. [2022-11-22 01:51:09,290 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5050 transitions. Word has length 7 [2022-11-22 01:51:09,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:09,290 INFO L495 AbstractCegarLoop]: Abstraction has 1458 states and 5050 transitions. [2022-11-22 01:51:09,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:09,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5050 transitions. [2022-11-22 01:51:09,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:51:09,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:09,292 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-22 01:51:09,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:51:09,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:09,502 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:09,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:09,503 INFO L85 PathProgramCache]: Analyzing trace with hash -810583124, now seen corresponding path program 2 times [2022-11-22 01:51:09,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:09,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278000534] [2022-11-22 01:51:09,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:09,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:51:09,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:09,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278000534] [2022-11-22 01:51:09,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278000534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:51:09,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914506989] [2022-11-22 01:51:09,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:51:09,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:09,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:51:09,608 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:51:09,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:51:09,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 01:51:09,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:51:09,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:51:09,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:51:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:51:09,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:51:09,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914506989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:09,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:51:09,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-22 01:51:09,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885431425] [2022-11-22 01:51:09,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:09,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:51:09,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:09,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:51:09,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:51:09,804 INFO L87 Difference]: Start difference. First operand 1458 states and 5050 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2022-11-22 01:51:10,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:10,026 INFO L93 Difference]: Finished difference Result 1596 states and 5305 transitions. [2022-11-22 01:51:10,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:51:10,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 9 [2022-11-22 01:51:10,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:10,036 INFO L225 Difference]: With dead ends: 1596 [2022-11-22 01:51:10,036 INFO L226 Difference]: Without dead ends: 1596 [2022-11-22 01:51:10,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:51:10,037 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:10,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:51:10,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-11-22 01:51:10,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1312. [2022-11-22 01:51:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1133 states have (on average 4.015887025595763) internal successors, (4550), 1311 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 4550 transitions. [2022-11-22 01:51:10,091 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 4550 transitions. Word has length 9 [2022-11-22 01:51:10,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:10,092 INFO L495 AbstractCegarLoop]: Abstraction has 1312 states and 4550 transitions. [2022-11-22 01:51:10,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2022-11-22 01:51:10,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 4550 transitions. [2022-11-22 01:51:10,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:51:10,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:10,093 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-22 01:51:10,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:51:10,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:10,304 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:10,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:10,305 INFO L85 PathProgramCache]: Analyzing trace with hash -810583107, now seen corresponding path program 1 times [2022-11-22 01:51:10,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:10,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867432424] [2022-11-22 01:51:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:10,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:10,380 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:51:10,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:10,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867432424] [2022-11-22 01:51:10,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867432424] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:51:10,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337778292] [2022-11-22 01:51:10,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:10,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:10,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:51:10,382 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:51:10,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:51:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:10,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:51:10,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:51:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 01:51:10,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:51:10,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337778292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:10,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:51:10,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-11-22 01:51:10,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17221963] [2022-11-22 01:51:10,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:10,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:51:10,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:10,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:51:10,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:51:10,547 INFO L87 Difference]: Start difference. First operand 1312 states and 4550 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:10,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:10,639 INFO L93 Difference]: Finished difference Result 1036 states and 3590 transitions. [2022-11-22 01:51:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:51:10,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 01:51:10,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:10,645 INFO L225 Difference]: With dead ends: 1036 [2022-11-22 01:51:10,645 INFO L226 Difference]: Without dead ends: 1036 [2022-11-22 01:51:10,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:51:10,646 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:10,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:51:10,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-11-22 01:51:10,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1036. [2022-11-22 01:51:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 917 states have (on average 3.914940021810251) internal successors, (3590), 1035 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:10,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 3590 transitions. [2022-11-22 01:51:10,694 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 3590 transitions. Word has length 9 [2022-11-22 01:51:10,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:10,694 INFO L495 AbstractCegarLoop]: Abstraction has 1036 states and 3590 transitions. [2022-11-22 01:51:10,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:10,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 3590 transitions. [2022-11-22 01:51:10,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:51:10,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:10,695 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-22 01:51:10,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 01:51:10,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-22 01:51:10,901 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:10,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:10,902 INFO L85 PathProgramCache]: Analyzing trace with hash -810583106, now seen corresponding path program 1 times [2022-11-22 01:51:10,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:10,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083492530] [2022-11-22 01:51:10,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:10,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:11,045 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:51:11,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:11,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083492530] [2022-11-22 01:51:11,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083492530] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:51:11,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733786324] [2022-11-22 01:51:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:11,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:11,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:51:11,048 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:51:11,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 01:51:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:11,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:51:11,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:51:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:51:11,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:51:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:51:11,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733786324] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:51:11,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [519958716] [2022-11-22 01:51:11,253 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 01:51:11,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:51:11,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-22 01:51:11,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459823506] [2022-11-22 01:51:11,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:51:11,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:51:11,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:11,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:51:11,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:51:11,256 INFO L87 Difference]: Start difference. First operand 1036 states and 3590 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:11,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:11,485 INFO L93 Difference]: Finished difference Result 2046 states and 6723 transitions. [2022-11-22 01:51:11,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:51:11,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 01:51:11,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:11,495 INFO L225 Difference]: With dead ends: 2046 [2022-11-22 01:51:11,496 INFO L226 Difference]: Without dead ends: 2046 [2022-11-22 01:51:11,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:51:11,497 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 125 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:11,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 0 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:51:11,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2022-11-22 01:51:11,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1296. [2022-11-22 01:51:11,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1177 states have (on average 4.022090059473237) internal successors, (4734), 1295 states have internal predecessors, (4734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 4734 transitions. [2022-11-22 01:51:11,543 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 4734 transitions. Word has length 9 [2022-11-22 01:51:11,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:11,544 INFO L495 AbstractCegarLoop]: Abstraction has 1296 states and 4734 transitions. [2022-11-22 01:51:11,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:11,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 4734 transitions. [2022-11-22 01:51:11,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 01:51:11,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:11,545 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:51:11,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 01:51:11,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:11,751 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:11,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:11,752 INFO L85 PathProgramCache]: Analyzing trace with hash 641023280, now seen corresponding path program 1 times [2022-11-22 01:51:11,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:11,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999648722] [2022-11-22 01:51:11,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:11,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:51:11,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:11,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999648722] [2022-11-22 01:51:11,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999648722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:11,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:11,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:51:11,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938126512] [2022-11-22 01:51:11,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:11,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:51:11,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:11,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:51:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:11,807 INFO L87 Difference]: Start difference. First operand 1296 states and 4734 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:11,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:11,928 INFO L93 Difference]: Finished difference Result 1620 states and 5909 transitions. [2022-11-22 01:51:11,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:51:11,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-22 01:51:11,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:11,936 INFO L225 Difference]: With dead ends: 1620 [2022-11-22 01:51:11,936 INFO L226 Difference]: Without dead ends: 1620 [2022-11-22 01:51:11,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:11,937 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:11,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:51:11,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2022-11-22 01:51:11,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1454. [2022-11-22 01:51:11,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1335 states have (on average 4.099625468164794) internal successors, (5473), 1453 states have internal predecessors, (5473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:11,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 5473 transitions. [2022-11-22 01:51:11,983 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 5473 transitions. Word has length 10 [2022-11-22 01:51:11,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:11,983 INFO L495 AbstractCegarLoop]: Abstraction has 1454 states and 5473 transitions. [2022-11-22 01:51:11,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:11,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 5473 transitions. [2022-11-22 01:51:11,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:51:11,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:11,984 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:51:11,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 01:51:11,985 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:11,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:11,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1603112396, now seen corresponding path program 1 times [2022-11-22 01:51:11,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:11,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072824998] [2022-11-22 01:51:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:11,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:51:12,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:12,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072824998] [2022-11-22 01:51:12,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072824998] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:51:12,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633005159] [2022-11-22 01:51:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:12,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:12,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:51:12,093 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:51:12,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:51:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:12,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:51:12,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:51:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:51:12,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:51:12,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633005159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:12,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:51:12,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-22 01:51:12,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812204596] [2022-11-22 01:51:12,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:12,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:51:12,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:12,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:51:12,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:51:12,273 INFO L87 Difference]: Start difference. First operand 1454 states and 5473 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:12,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:12,433 INFO L93 Difference]: Finished difference Result 1462 states and 5324 transitions. [2022-11-22 01:51:12,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:51:12,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 11 [2022-11-22 01:51:12,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:12,440 INFO L225 Difference]: With dead ends: 1462 [2022-11-22 01:51:12,441 INFO L226 Difference]: Without dead ends: 1462 [2022-11-22 01:51:12,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:51:12,441 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:12,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:51:12,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-11-22 01:51:12,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1296. [2022-11-22 01:51:12,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1197 states have (on average 4.083542188805347) internal successors, (4888), 1295 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:12,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 4888 transitions. [2022-11-22 01:51:12,481 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 4888 transitions. Word has length 11 [2022-11-22 01:51:12,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:12,481 INFO L495 AbstractCegarLoop]: Abstraction has 1296 states and 4888 transitions. [2022-11-22 01:51:12,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:12,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 4888 transitions. [2022-11-22 01:51:12,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:51:12,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:12,483 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:51:12,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 01:51:12,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:12,690 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:12,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:12,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1603112360, now seen corresponding path program 1 times [2022-11-22 01:51:12,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:12,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529997569] [2022-11-22 01:51:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:12,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:51:12,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:12,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529997569] [2022-11-22 01:51:12,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529997569] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:51:12,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471823616] [2022-11-22 01:51:12,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:12,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:12,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:51:12,816 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:51:12,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 01:51:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:12,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:51:12,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:51:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:51:12,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:51:13,049 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:51:13,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471823616] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:51:13,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1411784303] [2022-11-22 01:51:13,050 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 01:51:13,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:51:13,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-22 01:51:13,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691941065] [2022-11-22 01:51:13,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:51:13,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:51:13,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:13,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:51:13,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:51:13,053 INFO L87 Difference]: Start difference. First operand 1296 states and 4888 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2022-11-22 01:51:13,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:13,271 INFO L93 Difference]: Finished difference Result 2110 states and 7674 transitions. [2022-11-22 01:51:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:51:13,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 11 [2022-11-22 01:51:13,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:13,302 INFO L225 Difference]: With dead ends: 2110 [2022-11-22 01:51:13,302 INFO L226 Difference]: Without dead ends: 2110 [2022-11-22 01:51:13,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:51:13,303 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 105 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:13,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 0 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:51:13,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2022-11-22 01:51:13,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 1612. [2022-11-22 01:51:13,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1513 states have (on average 4.207534699272967) internal successors, (6366), 1611 states have internal predecessors, (6366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:13,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 6366 transitions. [2022-11-22 01:51:13,376 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 6366 transitions. Word has length 11 [2022-11-22 01:51:13,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:13,376 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 6366 transitions. [2022-11-22 01:51:13,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2022-11-22 01:51:13,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 6366 transitions. [2022-11-22 01:51:13,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:51:13,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:13,382 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-11-22 01:51:13,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 01:51:13,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:13,588 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:13,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:13,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1581241570, now seen corresponding path program 2 times [2022-11-22 01:51:13,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:13,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907787565] [2022-11-22 01:51:13,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:13,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:13,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:51:13,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:13,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907787565] [2022-11-22 01:51:13,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907787565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:13,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:13,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:51:13,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634191574] [2022-11-22 01:51:13,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:13,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:51:13,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:13,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:51:13,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:13,726 INFO L87 Difference]: Start difference. First operand 1612 states and 6366 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:13,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:13,789 INFO L93 Difference]: Finished difference Result 1308 states and 5234 transitions. [2022-11-22 01:51:13,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:51:13,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 01:51:13,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:13,797 INFO L225 Difference]: With dead ends: 1308 [2022-11-22 01:51:13,797 INFO L226 Difference]: Without dead ends: 1308 [2022-11-22 01:51:13,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:13,798 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:13,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:51:13,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2022-11-22 01:51:13,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1308. [2022-11-22 01:51:13,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1249 states have (on average 4.190552441953563) internal successors, (5234), 1307 states have internal predecessors, (5234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 5234 transitions. [2022-11-22 01:51:13,836 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 5234 transitions. Word has length 11 [2022-11-22 01:51:13,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:13,836 INFO L495 AbstractCegarLoop]: Abstraction has 1308 states and 5234 transitions. [2022-11-22 01:51:13,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:13,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 5234 transitions. [2022-11-22 01:51:13,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:51:13,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:13,837 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-11-22 01:51:13,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 01:51:13,838 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:13,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1581241569, now seen corresponding path program 1 times [2022-11-22 01:51:13,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:13,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005493770] [2022-11-22 01:51:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:13,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:51:13,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:13,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005493770] [2022-11-22 01:51:13,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005493770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:13,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:13,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:51:13,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235782770] [2022-11-22 01:51:13,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:13,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:51:13,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:13,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:51:13,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:13,913 INFO L87 Difference]: Start difference. First operand 1308 states and 5234 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:13,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:13,970 INFO L93 Difference]: Finished difference Result 1036 states and 4212 transitions. [2022-11-22 01:51:13,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:51:13,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 01:51:13,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:13,989 INFO L225 Difference]: With dead ends: 1036 [2022-11-22 01:51:13,989 INFO L226 Difference]: Without dead ends: 1036 [2022-11-22 01:51:13,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:13,992 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:13,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:51:13,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-11-22 01:51:14,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1036. [2022-11-22 01:51:14,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1007 states have (on average 4.182720953326713) internal successors, (4212), 1035 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 4212 transitions. [2022-11-22 01:51:14,021 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 4212 transitions. Word has length 11 [2022-11-22 01:51:14,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:14,022 INFO L495 AbstractCegarLoop]: Abstraction has 1036 states and 4212 transitions. [2022-11-22 01:51:14,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:14,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 4212 transitions. [2022-11-22 01:51:14,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:51:14,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:14,023 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-11-22 01:51:14,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 01:51:14,024 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:14,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:14,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1581241613, now seen corresponding path program 1 times [2022-11-22 01:51:14,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:14,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976063607] [2022-11-22 01:51:14,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:14,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:14,110 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:51:14,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:14,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976063607] [2022-11-22 01:51:14,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976063607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:14,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:14,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:51:14,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484740600] [2022-11-22 01:51:14,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:14,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:51:14,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:14,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:51:14,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:14,112 INFO L87 Difference]: Start difference. First operand 1036 states and 4212 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:14,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:14,164 INFO L93 Difference]: Finished difference Result 792 states and 3242 transitions. [2022-11-22 01:51:14,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:51:14,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 01:51:14,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:14,169 INFO L225 Difference]: With dead ends: 792 [2022-11-22 01:51:14,169 INFO L226 Difference]: Without dead ends: 782 [2022-11-22 01:51:14,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:14,170 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:14,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:51:14,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-11-22 01:51:14,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 446. [2022-11-22 01:51:14,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 435 states have (on average 3.6551724137931036) internal successors, (1590), 445 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1590 transitions. [2022-11-22 01:51:14,187 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1590 transitions. Word has length 11 [2022-11-22 01:51:14,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:14,187 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 1590 transitions. [2022-11-22 01:51:14,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:14,188 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1590 transitions. [2022-11-22 01:51:14,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 01:51:14,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:14,188 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:51:14,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 01:51:14,189 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:14,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:14,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1844013970, now seen corresponding path program 1 times [2022-11-22 01:51:14,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:14,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34747463] [2022-11-22 01:51:14,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:14,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:51:14,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:14,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34747463] [2022-11-22 01:51:14,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34747463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:14,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:14,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:51:14,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700201302] [2022-11-22 01:51:14,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:14,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:51:14,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:14,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:51:14,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:14,246 INFO L87 Difference]: Start difference. First operand 446 states and 1590 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:14,291 INFO L93 Difference]: Finished difference Result 334 states and 1193 transitions. [2022-11-22 01:51:14,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:51:14,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-22 01:51:14,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:14,293 INFO L225 Difference]: With dead ends: 334 [2022-11-22 01:51:14,294 INFO L226 Difference]: Without dead ends: 334 [2022-11-22 01:51:14,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:14,295 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:14,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:51:14,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-11-22 01:51:14,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2022-11-22 01:51:14,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 329 states have (on average 3.6261398176291793) internal successors, (1193), 333 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 1193 transitions. [2022-11-22 01:51:14,304 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 1193 transitions. Word has length 12 [2022-11-22 01:51:14,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:14,305 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 1193 transitions. [2022-11-22 01:51:14,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:14,305 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 1193 transitions. [2022-11-22 01:51:14,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 01:51:14,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:14,306 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:51:14,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 01:51:14,306 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:14,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:14,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1844014037, now seen corresponding path program 1 times [2022-11-22 01:51:14,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:14,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912161399] [2022-11-22 01:51:14,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:14,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:14,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:51:14,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:14,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912161399] [2022-11-22 01:51:14,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912161399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:14,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:14,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:51:14,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087478395] [2022-11-22 01:51:14,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:14,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:51:14,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:14,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:51:14,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:14,359 INFO L87 Difference]: Start difference. First operand 334 states and 1193 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:14,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:14,435 INFO L93 Difference]: Finished difference Result 440 states and 1572 transitions. [2022-11-22 01:51:14,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:51:14,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-22 01:51:14,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:14,437 INFO L225 Difference]: With dead ends: 440 [2022-11-22 01:51:14,438 INFO L226 Difference]: Without dead ends: 440 [2022-11-22 01:51:14,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:14,438 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:14,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:51:14,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-22 01:51:14,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 392. [2022-11-22 01:51:14,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 387 states have (on average 3.7674418604651163) internal successors, (1458), 391 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1458 transitions. [2022-11-22 01:51:14,450 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1458 transitions. Word has length 12 [2022-11-22 01:51:14,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:14,451 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 1458 transitions. [2022-11-22 01:51:14,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:14,451 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1458 transitions. [2022-11-22 01:51:14,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:51:14,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:14,452 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:51:14,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 01:51:14,452 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:14,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:14,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1302323674, now seen corresponding path program 1 times [2022-11-22 01:51:14,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:14,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881285407] [2022-11-22 01:51:14,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:14,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:51:14,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:14,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881285407] [2022-11-22 01:51:14,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881285407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:14,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:14,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:51:14,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331177377] [2022-11-22 01:51:14,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:14,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:51:14,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:14,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:51:14,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:14,520 INFO L87 Difference]: Start difference. First operand 392 states and 1458 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:14,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:14,572 INFO L93 Difference]: Finished difference Result 288 states and 1080 transitions. [2022-11-22 01:51:14,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:51:14,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 13 [2022-11-22 01:51:14,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:14,574 INFO L225 Difference]: With dead ends: 288 [2022-11-22 01:51:14,575 INFO L226 Difference]: Without dead ends: 248 [2022-11-22 01:51:14,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:14,576 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:14,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:51:14,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-22 01:51:14,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 134. [2022-11-22 01:51:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 3.1052631578947367) internal successors, (413), 133 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:14,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 413 transitions. [2022-11-22 01:51:14,581 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 413 transitions. Word has length 13 [2022-11-22 01:51:14,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:14,582 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 413 transitions. [2022-11-22 01:51:14,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:14,582 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 413 transitions. [2022-11-22 01:51:14,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:51:14,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:14,583 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:51:14,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 01:51:14,583 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-22 01:51:14,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:14,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1329861427, now seen corresponding path program 1 times [2022-11-22 01:51:14,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:14,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164969898] [2022-11-22 01:51:14,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:14,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:51:14,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:14,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164969898] [2022-11-22 01:51:14,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164969898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:14,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:14,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:51:14,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850765532] [2022-11-22 01:51:14,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:14,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:51:14,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:14,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:51:14,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:14,633 INFO L87 Difference]: Start difference. First operand 134 states and 413 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) [2022-11-22 01:51:14,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:14,668 INFO L93 Difference]: Finished difference Result 108 states and 328 transitions. [2022-11-22 01:51:14,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:51:14,668 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 13 [2022-11-22 01:51:14,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:14,669 INFO L225 Difference]: With dead ends: 108 [2022-11-22 01:51:14,669 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 01:51:14,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:14,670 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:14,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:51:14,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 01:51:14,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 01:51:14,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:14,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 01:51:14,671 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-11-22 01:51:14,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:14,671 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 01:51:14,671 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) [2022-11-22 01:51:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 01:51:14,672 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 01:51:14,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 53 remaining) [2022-11-22 01:51:14,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 53 remaining) [2022-11-22 01:51:14,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 53 remaining) [2022-11-22 01:51:14,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 53 remaining) [2022-11-22 01:51:14,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 53 remaining) [2022-11-22 01:51:14,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 53 remaining) [2022-11-22 01:51:14,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 53 remaining) [2022-11-22 01:51:14,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 53 remaining) [2022-11-22 01:51:14,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 53 remaining) [2022-11-22 01:51:14,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 53 remaining) [2022-11-22 01:51:14,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 53 remaining) [2022-11-22 01:51:14,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 53 remaining) [2022-11-22 01:51:14,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 53 remaining) [2022-11-22 01:51:14,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 53 remaining) [2022-11-22 01:51:14,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 53 remaining) [2022-11-22 01:51:14,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 53 remaining) [2022-11-22 01:51:14,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 53 remaining) [2022-11-22 01:51:14,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 53 remaining) [2022-11-22 01:51:14,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 53 remaining) [2022-11-22 01:51:14,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 53 remaining) [2022-11-22 01:51:14,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 53 remaining) [2022-11-22 01:51:14,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 53 remaining) [2022-11-22 01:51:14,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 53 remaining) [2022-11-22 01:51:14,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 53 remaining) [2022-11-22 01:51:14,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 53 remaining) [2022-11-22 01:51:14,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 53 remaining) [2022-11-22 01:51:14,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 53 remaining) [2022-11-22 01:51:14,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 53 remaining) [2022-11-22 01:51:14,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 53 remaining) [2022-11-22 01:51:14,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 53 remaining) [2022-11-22 01:51:14,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 53 remaining) [2022-11-22 01:51:14,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 53 remaining) [2022-11-22 01:51:14,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 53 remaining) [2022-11-22 01:51:14,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 53 remaining) [2022-11-22 01:51:14,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 53 remaining) [2022-11-22 01:51:14,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 53 remaining) [2022-11-22 01:51:14,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 53 remaining) [2022-11-22 01:51:14,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 53 remaining) [2022-11-22 01:51:14,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 53 remaining) [2022-11-22 01:51:14,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 53 remaining) [2022-11-22 01:51:14,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 53 remaining) [2022-11-22 01:51:14,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 53 remaining) [2022-11-22 01:51:14,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 53 remaining) [2022-11-22 01:51:14,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 53 remaining) [2022-11-22 01:51:14,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 53 remaining) [2022-11-22 01:51:14,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 53 remaining) [2022-11-22 01:51:14,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 53 remaining) [2022-11-22 01:51:14,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 53 remaining) [2022-11-22 01:51:14,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 53 remaining) [2022-11-22 01:51:14,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 53 remaining) [2022-11-22 01:51:14,684 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 53 remaining) [2022-11-22 01:51:14,684 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 53 remaining) [2022-11-22 01:51:14,684 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 53 remaining) [2022-11-22 01:51:14,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 01:51:14,687 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:51:14,692 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-22 01:51:14,692 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:51:14,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:51:14 BasicIcfg [2022-11-22 01:51:14,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:51:14,695 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:51:14,695 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:51:14,696 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:51:14,696 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:50:35" (3/4) ... [2022-11-22 01:51:14,699 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 01:51:14,705 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-22 01:51:14,705 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-22 01:51:14,706 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-22 01:51:14,716 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-11-22 01:51:14,716 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-22 01:51:14,717 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 01:51:14,717 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 01:51:14,775 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 01:51:14,775 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:51:14,776 INFO L158 Benchmark]: Toolchain (without parser) took 40561.86ms. Allocated memory was 165.7MB in the beginning and 239.1MB in the end (delta: 73.4MB). Free memory was 138.3MB in the beginning and 156.5MB in the end (delta: -18.2MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. [2022-11-22 01:51:14,776 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:51:14,777 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.70ms. Allocated memory is still 165.7MB. Free memory was 138.3MB in the beginning and 124.8MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-22 01:51:14,777 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.29ms. Allocated memory is still 165.7MB. Free memory was 124.8MB in the beginning and 121.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 01:51:14,781 INFO L158 Benchmark]: Boogie Preprocessor took 60.20ms. Allocated memory is still 165.7MB. Free memory was 121.9MB in the beginning and 119.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:51:14,782 INFO L158 Benchmark]: RCFGBuilder took 1023.24ms. Allocated memory is still 165.7MB. Free memory was 119.1MB in the beginning and 89.1MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-22 01:51:14,782 INFO L158 Benchmark]: TraceAbstraction took 38968.03ms. Allocated memory was 165.7MB in the beginning and 239.1MB in the end (delta: 73.4MB). Free memory was 88.4MB in the beginning and 160.7MB in the end (delta: -72.3MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2022-11-22 01:51:14,783 INFO L158 Benchmark]: Witness Printer took 80.05ms. Allocated memory is still 239.1MB. Free memory was 160.7MB in the beginning and 156.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 01:51:14,787 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 369.70ms. Allocated memory is still 165.7MB. Free memory was 138.3MB in the beginning and 124.8MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.29ms. Allocated memory is still 165.7MB. Free memory was 124.8MB in the beginning and 121.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.20ms. Allocated memory is still 165.7MB. Free memory was 121.9MB in the beginning and 119.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1023.24ms. Allocated memory is still 165.7MB. Free memory was 119.1MB in the beginning and 89.1MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 38968.03ms. Allocated memory was 165.7MB in the beginning and 239.1MB in the end (delta: 73.4MB). Free memory was 88.4MB in the beginning and 160.7MB in the end (delta: -72.3MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Witness Printer took 80.05ms. Allocated memory is still 239.1MB. Free memory was 160.7MB in the beginning and 156.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.8s, 434 PlacesBefore, 59 PlacesAfterwards, 456 TransitionsBefore, 53 TransitionsAfterwards, 62208 CoEnabledTransitionPairs, 8 FixpointIterations, 142 TrivialSequentialCompositions, 334 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 74 ConcurrentYvCompositions, 28 ChoiceCompositions, 592 TotalNumberOfCompositions, 59388 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 58454, independent: 58416, independent conditional: 0, independent unconditional: 58416, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 44610, independent: 44597, independent conditional: 0, independent unconditional: 44597, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 44610, independent: 44597, independent conditional: 0, independent unconditional: 44597, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 42, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 58454, independent: 13819, independent conditional: 0, independent unconditional: 13819, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 44610, unknown conditional: 0, unknown unconditional: 44610] , Statistics on independence cache: Total cache size (in pairs): 190, Positive cache size: 188, Positive conditional cache size: 0, Positive unconditional cache size: 188, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 692 locations, 53 error locations. Started 1 CEGAR loops. OverallTime: 38.7s, OverallIterations: 20, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 29.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 854 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 854 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1644 IncrementalHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 0 mSDtfsCounter, 1644 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3189occurred in iteration=0, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 20 MinimizatonAttempts, 9184 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 239 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 237 ConstructedInterpolants, 0 QuantifiedInterpolants, 551 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1487 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 32 InterpolantComputations, 16 PerfectInterpolantSequences, 170/188 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-22 01:51:14,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe44a3e7-051d-4fbd-8d41-7c2cd7f3a0af/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE