./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW --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 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 --- 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-4e7fbc6 [2022-11-23 14:22:22,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:22:22,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:22:22,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:22:22,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:22:22,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:22:22,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:22:22,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:22:22,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:22:22,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:22:22,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:22:22,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:22:22,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:22:22,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:22:22,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:22:22,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:22:22,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:22:22,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:22:22,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:22:22,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:22:22,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:22:22,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:22:22,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:22:22,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:22:22,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:22:22,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:22:22,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:22:22,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:22:22,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:22:22,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:22:22,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:22:22,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:22:22,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:22:22,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:22:22,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:22:22,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:22:22,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:22:22,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:22:22,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:22:22,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:22:22,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:22:22,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 14:22:22,404 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:22:22,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:22:22,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:22:22,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:22:22,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:22:22,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:22:22,406 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:22:22,406 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:22:22,407 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:22:22,407 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:22:22,407 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:22:22,407 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:22:22,414 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:22:22,414 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:22:22,414 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:22:22,415 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:22:22,415 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:22:22,415 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:22:22,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:22:22,417 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:22:22,417 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:22:22,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:22:22,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:22:22,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:22:22,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:22:22,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:22:22,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:22:22,419 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 14:22:22,420 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:22:22,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:22:22,420 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:22:22,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:22:22,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:22:22,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:22:22,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:22:22,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:22:22,423 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:22:22,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:22:22,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:22:22,424 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:22:22,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:22:22,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:22:22,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:22:22,425 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_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 [2022-11-23 14:22:22,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:22:22,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:22:22,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:22:22,781 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:22:22,782 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:22:22,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2022-11-23 14:22:25,968 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:22:26,174 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:22:26,175 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2022-11-23 14:22:26,185 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/data/282da0ecd/08fa443834c347ddb0aa96c8b9c9f2a1/FLAG49f11fbaf [2022-11-23 14:22:26,199 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/data/282da0ecd/08fa443834c347ddb0aa96c8b9c9f2a1 [2022-11-23 14:22:26,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:22:26,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:22:26,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:22:26,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:22:26,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:22:26,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:26" (1/1) ... [2022-11-23 14:22:26,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be1ce61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:26, skipping insertion in model container [2022-11-23 14:22:26,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:26" (1/1) ... [2022-11-23 14:22:26,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:22:26,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:22:26,421 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_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c[2553,2566] [2022-11-23 14:22:26,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:22:26,437 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:22:26,459 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_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c[2553,2566] [2022-11-23 14:22:26,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:22:26,480 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:22:26,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:26 WrapperNode [2022-11-23 14:22:26,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:22:26,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:22:26,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:22:26,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:22:26,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:26" (1/1) ... [2022-11-23 14:22:26,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:26" (1/1) ... [2022-11-23 14:22:26,518 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 103 [2022-11-23 14:22:26,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:22:26,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:22:26,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:22:26,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:22:26,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:26" (1/1) ... [2022-11-23 14:22:26,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:26" (1/1) ... [2022-11-23 14:22:26,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:26" (1/1) ... [2022-11-23 14:22:26,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:26" (1/1) ... [2022-11-23 14:22:26,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:26" (1/1) ... [2022-11-23 14:22:26,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:26" (1/1) ... [2022-11-23 14:22:26,546 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:26" (1/1) ... [2022-11-23 14:22:26,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:26" (1/1) ... [2022-11-23 14:22:26,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:22:26,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:22:26,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:22:26,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:22:26,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:26" (1/1) ... [2022-11-23 14:22:26,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:22:26,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:26,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:22:26,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:22:26,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:22:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 14:22:26,633 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 14:22:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 14:22:26,633 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 14:22:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 14:22:26,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 14:22:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:22:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:22:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:22:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 14:22:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 14:22:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:22:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:22:26,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:22:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:22:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:22:26,636 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 14:22:26,784 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:22:26,794 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:22:27,197 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:22:27,282 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:22:27,283 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 14:22:27,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:27 BoogieIcfgContainer [2022-11-23 14:22:27,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:22:27,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:22:27,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:22:27,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:22:27,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:22:26" (1/3) ... [2022-11-23 14:22:27,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201f01b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:27, skipping insertion in model container [2022-11-23 14:22:27,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:26" (2/3) ... [2022-11-23 14:22:27,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201f01b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:27, skipping insertion in model container [2022-11-23 14:22:27,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:27" (3/3) ... [2022-11-23 14:22:27,295 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2022-11-23 14:22:27,303 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 14:22:27,310 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:22:27,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-23 14:22:27,311 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 14:22:27,434 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 14:22:27,499 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 14:22:27,513 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 168 transitions, 360 flow [2022-11-23 14:22:27,516 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 168 transitions, 360 flow [2022-11-23 14:22:27,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 168 transitions, 360 flow [2022-11-23 14:22:27,594 INFO L130 PetriNetUnfolder]: 12/165 cut-off events. [2022-11-23 14:22:27,594 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 14:22:27,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 165 events. 12/165 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2022-11-23 14:22:27,604 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2022-11-23 14:22:35,950 INFO L134 LiptonReduction]: Checked pairs total: 2865 [2022-11-23 14:22:35,950 INFO L136 LiptonReduction]: Total number of compositions: 175 [2022-11-23 14:22:35,967 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 35 transitions, 94 flow [2022-11-23 14:22:36,033 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 369 states, 341 states have (on average 3.530791788856305) internal successors, (1204), 368 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:36,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:22:36,059 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;@153156a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:22:36,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-23 14:22:36,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 369 states, 341 states have (on average 3.530791788856305) internal successors, (1204), 368 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 14:22:36,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:36,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 14:22:36,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:22:36,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:36,076 INFO L85 PathProgramCache]: Analyzing trace with hash 22187, now seen corresponding path program 1 times [2022-11-23 14:22:36,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:36,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100903464] [2022-11-23 14:22:36,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:36,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:36,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:36,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100903464] [2022-11-23 14:22:36,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100903464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:36,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:36,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:22:36,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509126072] [2022-11-23 14:22:36,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:36,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:22:36,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:36,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:22:36,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:22:36,421 INFO L87 Difference]: Start difference. First operand has 369 states, 341 states have (on average 3.530791788856305) internal successors, (1204), 368 states have internal predecessors, (1204), 0 states have call successors, (0), 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) [2022-11-23 14:22:36,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:36,569 INFO L93 Difference]: Finished difference Result 735 states and 2405 transitions. [2022-11-23 14:22:36,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:22:36,572 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 [2022-11-23 14:22:36,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:36,592 INFO L225 Difference]: With dead ends: 735 [2022-11-23 14:22:36,592 INFO L226 Difference]: Without dead ends: 735 [2022-11-23 14:22:36,593 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 [2022-11-23 14:22:36,597 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 26 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:36,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 6 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:22:36,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-11-23 14:22:36,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 370. [2022-11-23 14:22:36,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 342 states have (on average 3.526315789473684) internal successors, (1206), 369 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:36,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1206 transitions. [2022-11-23 14:22:36,676 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1206 transitions. Word has length 2 [2022-11-23 14:22:36,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:36,677 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 1206 transitions. [2022-11-23 14:22:36,677 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) [2022-11-23 14:22:36,677 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1206 transitions. [2022-11-23 14:22:36,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 14:22:36,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:36,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 14:22:36,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:22:36,679 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:22:36,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:36,680 INFO L85 PathProgramCache]: Analyzing trace with hash 689059, now seen corresponding path program 1 times [2022-11-23 14:22:36,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:36,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076701270] [2022-11-23 14:22:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:36,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:36,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:36,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076701270] [2022-11-23 14:22:36,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076701270] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:22:36,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728120238] [2022-11-23 14:22:36,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:36,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:36,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:36,840 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:36,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:22:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:36,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:22:36,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:37,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:22:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:37,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728120238] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:22:37,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [867892606] [2022-11-23 14:22:37,069 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) [2022-11-23 14:22:37,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:22:37,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-23 14:22:37,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562810796] [2022-11-23 14:22:37,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:22:37,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:22:37,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:37,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:22:37,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:22:37,089 INFO L87 Difference]: Start difference. First operand 370 states and 1206 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) [2022-11-23 14:22:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:37,393 INFO L93 Difference]: Finished difference Result 1833 states and 6011 transitions. [2022-11-23 14:22:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:22:37,393 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 [2022-11-23 14:22:37,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:37,410 INFO L225 Difference]: With dead ends: 1833 [2022-11-23 14:22:37,410 INFO L226 Difference]: Without dead ends: 1833 [2022-11-23 14:22:37,411 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 [2022-11-23 14:22:37,412 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 131 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:37,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 18 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:22:37,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2022-11-23 14:22:37,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 373. [2022-11-23 14:22:37,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 345 states have (on average 3.5217391304347827) internal successors, (1215), 372 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:37,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1215 transitions. [2022-11-23 14:22:37,470 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1215 transitions. Word has length 3 [2022-11-23 14:22:37,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:37,471 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 1215 transitions. [2022-11-23 14:22:37,471 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) [2022-11-23 14:22:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1215 transitions. [2022-11-23 14:22:37,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 14:22:37,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:37,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 14:22:37,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:22:37,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:37,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:22:37,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:37,685 INFO L85 PathProgramCache]: Analyzing trace with hash 689050, now seen corresponding path program 1 times [2022-11-23 14:22:37,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:37,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159313768] [2022-11-23 14:22:37,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:37,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:37,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:37,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159313768] [2022-11-23 14:22:37,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159313768] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:22:37,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926859965] [2022-11-23 14:22:37,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:37,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:37,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:37,854 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:37,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:22:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:37,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:22:37,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:37,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:22:37,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926859965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:37,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:22:37,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-23 14:22:37,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506921177] [2022-11-23 14:22:37,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:37,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:22:37,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:37,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:22:37,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:22:37,966 INFO L87 Difference]: Start difference. First operand 373 states and 1215 transitions. Second operand has 4 states, 3 states have (on average 1.0) 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) [2022-11-23 14:22:38,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:38,079 INFO L93 Difference]: Finished difference Result 737 states and 2410 transitions. [2022-11-23 14:22:38,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:22:38,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) 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 [2022-11-23 14:22:38,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:38,085 INFO L225 Difference]: With dead ends: 737 [2022-11-23 14:22:38,085 INFO L226 Difference]: Without dead ends: 737 [2022-11-23 14:22:38,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:22:38,093 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 54 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:38,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 9 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:22:38,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-11-23 14:22:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 372. [2022-11-23 14:22:38,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 345 states have (on average 3.5101449275362318) internal successors, (1211), 371 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1211 transitions. [2022-11-23 14:22:38,119 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1211 transitions. Word has length 3 [2022-11-23 14:22:38,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:38,119 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 1211 transitions. [2022-11-23 14:22:38,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) 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) [2022-11-23 14:22:38,120 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1211 transitions. [2022-11-23 14:22:38,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 14:22:38,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:38,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 14:22:38,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 14:22:38,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:38,327 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:22:38,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:38,327 INFO L85 PathProgramCache]: Analyzing trace with hash 662079776, now seen corresponding path program 1 times [2022-11-23 14:22:38,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:38,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273590321] [2022-11-23 14:22:38,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:38,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:38,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:38,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273590321] [2022-11-23 14:22:38,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273590321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:38,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:38,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:22:38,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195712507] [2022-11-23 14:22:38,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:38,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:22:38,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:38,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:22:38,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:22:38,416 INFO L87 Difference]: Start difference. First operand 372 states and 1211 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) [2022-11-23 14:22:38,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:38,499 INFO L93 Difference]: Finished difference Result 550 states and 1782 transitions. [2022-11-23 14:22:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:22:38,504 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 [2022-11-23 14:22:38,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:38,509 INFO L225 Difference]: With dead ends: 550 [2022-11-23 14:22:38,509 INFO L226 Difference]: Without dead ends: 550 [2022-11-23 14:22:38,511 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 [2022-11-23 14:22:38,520 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:38,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 7 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:22:38,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-11-23 14:22:38,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 434. [2022-11-23 14:22:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 407 states have (on average 3.6363636363636362) internal successors, (1480), 433 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1480 transitions. [2022-11-23 14:22:38,542 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1480 transitions. Word has length 5 [2022-11-23 14:22:38,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:38,542 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 1480 transitions. [2022-11-23 14:22:38,542 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) [2022-11-23 14:22:38,543 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1480 transitions. [2022-11-23 14:22:38,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:22:38,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:38,543 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-23 14:22:38,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:22:38,544 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:22:38,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:38,545 INFO L85 PathProgramCache]: Analyzing trace with hash -945826645, now seen corresponding path program 2 times [2022-11-23 14:22:38,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:38,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198090508] [2022-11-23 14:22:38,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:38,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:38,666 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:38,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:38,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198090508] [2022-11-23 14:22:38,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198090508] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:22:38,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606121265] [2022-11-23 14:22:38,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:22:38,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:38,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:38,668 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:38,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:22:38,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 14:22:38,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:22:38,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:22:38,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:38,773 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 14:22:38,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:22:38,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606121265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:38,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:22:38,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-23 14:22:38,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33997323] [2022-11-23 14:22:38,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:38,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:22:38,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:38,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:22:38,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:22:38,776 INFO L87 Difference]: Start difference. First operand 434 states and 1480 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) [2022-11-23 14:22:38,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:38,822 INFO L93 Difference]: Finished difference Result 433 states and 1479 transitions. [2022-11-23 14:22:38,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:22:38,823 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 [2022-11-23 14:22:38,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:38,827 INFO L225 Difference]: With dead ends: 433 [2022-11-23 14:22:38,827 INFO L226 Difference]: Without dead ends: 433 [2022-11-23 14:22:38,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:22:38,828 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:38,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:22:38,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-23 14:22:38,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 429. [2022-11-23 14:22:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 403 states have (on average 3.6501240694789083) internal successors, (1471), 428 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:38,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 1471 transitions. [2022-11-23 14:22:38,846 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 1471 transitions. Word has length 6 [2022-11-23 14:22:38,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:38,847 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 1471 transitions. [2022-11-23 14:22:38,847 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) [2022-11-23 14:22:38,847 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 1471 transitions. [2022-11-23 14:22:38,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:22:38,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:38,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 14:22:38,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:22:39,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:39,055 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:22:39,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:39,055 INFO L85 PathProgramCache]: Analyzing trace with hash -950361715, now seen corresponding path program 1 times [2022-11-23 14:22:39,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:39,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235881910] [2022-11-23 14:22:39,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:39,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:39,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:39,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235881910] [2022-11-23 14:22:39,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235881910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:39,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:39,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:22:39,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571142346] [2022-11-23 14:22:39,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:39,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:22:39,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:39,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:22:39,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:22:39,099 INFO L87 Difference]: Start difference. First operand 429 states and 1471 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-23 14:22:39,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:39,169 INFO L93 Difference]: Finished difference Result 367 states and 1262 transitions. [2022-11-23 14:22:39,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:22:39,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-11-23 14:22:39,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:39,172 INFO L225 Difference]: With dead ends: 367 [2022-11-23 14:22:39,173 INFO L226 Difference]: Without dead ends: 367 [2022-11-23 14:22:39,173 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 [2022-11-23 14:22:39,174 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:39,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 7 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:22:39,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-11-23 14:22:39,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2022-11-23 14:22:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 350 states have (on average 3.605714285714286) internal successors, (1262), 366 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:39,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 1262 transitions. [2022-11-23 14:22:39,190 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 1262 transitions. Word has length 6 [2022-11-23 14:22:39,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:39,191 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 1262 transitions. [2022-11-23 14:22:39,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-23 14:22:39,192 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 1262 transitions. [2022-11-23 14:22:39,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:22:39,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:39,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 14:22:39,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:22:39,196 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:22:39,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:39,198 INFO L85 PathProgramCache]: Analyzing trace with hash -950361678, now seen corresponding path program 1 times [2022-11-23 14:22:39,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:39,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900644469] [2022-11-23 14:22:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:39,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:39,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:39,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:39,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900644469] [2022-11-23 14:22:39,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900644469] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:22:39,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871416809] [2022-11-23 14:22:39,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:39,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:39,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:39,296 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:39,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:22:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:39,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:22:39,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:39,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:39,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:22:39,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871416809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:39,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:22:39,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2022-11-23 14:22:39,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883985] [2022-11-23 14:22:39,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:39,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:22:39,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:39,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:22:39,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:22:39,443 INFO L87 Difference]: Start difference. First operand 367 states and 1262 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2022-11-23 14:22:39,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:39,526 INFO L93 Difference]: Finished difference Result 368 states and 1263 transitions. [2022-11-23 14:22:39,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:22:39,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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 [2022-11-23 14:22:39,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:39,529 INFO L225 Difference]: With dead ends: 368 [2022-11-23 14:22:39,530 INFO L226 Difference]: Without dead ends: 368 [2022-11-23 14:22:39,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:22:39,531 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:39,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:22:39,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-11-23 14:22:39,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2022-11-23 14:22:39,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 351 states have (on average 3.5982905982905984) internal successors, (1263), 367 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 1263 transitions. [2022-11-23 14:22:39,551 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 1263 transitions. Word has length 6 [2022-11-23 14:22:39,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:39,551 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 1263 transitions. [2022-11-23 14:22:39,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2022-11-23 14:22:39,551 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 1263 transitions. [2022-11-23 14:22:39,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 14:22:39,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:39,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:39,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:22:39,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:39,758 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:22:39,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:39,759 INFO L85 PathProgramCache]: Analyzing trace with hash 739611306, now seen corresponding path program 1 times [2022-11-23 14:22:39,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:39,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431356011] [2022-11-23 14:22:39,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:39,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:22:39,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:39,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431356011] [2022-11-23 14:22:39,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431356011] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:22:39,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351882233] [2022-11-23 14:22:39,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:39,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:39,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:39,845 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:39,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:22:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:39,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:22:39,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:39,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:22:39,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:22:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:22:39,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351882233] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:22:39,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [58992819] [2022-11-23 14:22:39,989 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) [2022-11-23 14:22:39,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:22:39,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-23 14:22:39,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31301913] [2022-11-23 14:22:39,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:22:39,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:22:39,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:39,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:22:39,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:22:39,995 INFO L87 Difference]: Start difference. First operand 368 states and 1263 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 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) [2022-11-23 14:22:40,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:40,178 INFO L93 Difference]: Finished difference Result 1018 states and 3278 transitions. [2022-11-23 14:22:40,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:22:40,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 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 7 [2022-11-23 14:22:40,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:40,186 INFO L225 Difference]: With dead ends: 1018 [2022-11-23 14:22:40,186 INFO L226 Difference]: Without dead ends: 1018 [2022-11-23 14:22:40,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:22:40,188 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 120 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:40,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 17 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:22:40,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2022-11-23 14:22:40,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 554. [2022-11-23 14:22:40,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 537 states have (on average 3.8547486033519553) internal successors, (2070), 553 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:40,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 2070 transitions. [2022-11-23 14:22:40,220 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 2070 transitions. Word has length 7 [2022-11-23 14:22:40,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:40,220 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 2070 transitions. [2022-11-23 14:22:40,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 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) [2022-11-23 14:22:40,221 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 2070 transitions. [2022-11-23 14:22:40,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:22:40,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:40,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:40,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:22:40,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:40,429 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:22:40,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:40,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1458121719, now seen corresponding path program 1 times [2022-11-23 14:22:40,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:40,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069865048] [2022-11-23 14:22:40,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:40,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:40,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:22:40,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:40,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069865048] [2022-11-23 14:22:40,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069865048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:40,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:40,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:22:40,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206211138] [2022-11-23 14:22:40,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:40,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:22:40,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:40,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:22:40,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:22:40,478 INFO L87 Difference]: Start difference. First operand 554 states and 2070 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) [2022-11-23 14:22:40,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:40,553 INFO L93 Difference]: Finished difference Result 770 states and 2877 transitions. [2022-11-23 14:22:40,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:22:40,554 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 8 [2022-11-23 14:22:40,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:40,560 INFO L225 Difference]: With dead ends: 770 [2022-11-23 14:22:40,560 INFO L226 Difference]: Without dead ends: 770 [2022-11-23 14:22:40,560 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 [2022-11-23 14:22:40,561 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:40,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 7 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:22:40,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-11-23 14:22:40,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 660. [2022-11-23 14:22:40,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 643 states have (on average 4.009331259720062) internal successors, (2578), 659 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 2578 transitions. [2022-11-23 14:22:40,590 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 2578 transitions. Word has length 8 [2022-11-23 14:22:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:40,590 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 2578 transitions. [2022-11-23 14:22:40,591 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) [2022-11-23 14:22:40,591 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 2578 transitions. [2022-11-23 14:22:40,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 14:22:40,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:40,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:40,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:22:40,592 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:22:40,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:40,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2042866312, now seen corresponding path program 1 times [2022-11-23 14:22:40,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:40,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422613828] [2022-11-23 14:22:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:40,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:22:40,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:40,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422613828] [2022-11-23 14:22:40,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422613828] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:22:40,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218647482] [2022-11-23 14:22:40,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:40,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:40,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:40,652 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:40,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 14:22:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:40,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:22:40,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:22:40,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:22:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:22:40,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218647482] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:22:40,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1075116533] [2022-11-23 14:22:40,786 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) [2022-11-23 14:22:40,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:22:40,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-23 14:22:40,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373771314] [2022-11-23 14:22:40,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:22:40,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:22:40,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:40,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:22:40,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:22:40,789 INFO L87 Difference]: Start difference. First operand 660 states and 2578 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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) [2022-11-23 14:22:40,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:40,975 INFO L93 Difference]: Finished difference Result 1418 states and 5616 transitions. [2022-11-23 14:22:40,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:22:40,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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 9 [2022-11-23 14:22:40,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:40,987 INFO L225 Difference]: With dead ends: 1418 [2022-11-23 14:22:40,988 INFO L226 Difference]: Without dead ends: 1418 [2022-11-23 14:22:40,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:22:40,989 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 135 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:40,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 17 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:22:40,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2022-11-23 14:22:41,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 978. [2022-11-23 14:22:41,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 961 states have (on average 4.599375650364204) internal successors, (4420), 977 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 4420 transitions. [2022-11-23 14:22:41,071 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 4420 transitions. Word has length 9 [2022-11-23 14:22:41,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:41,072 INFO L495 AbstractCegarLoop]: Abstraction has 978 states and 4420 transitions. [2022-11-23 14:22:41,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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) [2022-11-23 14:22:41,072 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 4420 transitions. [2022-11-23 14:22:41,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 14:22:41,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:41,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:41,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 14:22:41,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 14:22:41,280 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:22:41,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:41,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2042866349, now seen corresponding path program 1 times [2022-11-23 14:22:41,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:41,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446139294] [2022-11-23 14:22:41,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:41,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:41,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:22:41,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:41,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446139294] [2022-11-23 14:22:41,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446139294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:41,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:41,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:22:41,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619064657] [2022-11-23 14:22:41,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:41,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:22:41,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:41,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:22:41,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:22:41,325 INFO L87 Difference]: Start difference. First operand 978 states and 4420 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:41,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:41,402 INFO L93 Difference]: Finished difference Result 872 states and 3696 transitions. [2022-11-23 14:22:41,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:22:41,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 14:22:41,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:41,409 INFO L225 Difference]: With dead ends: 872 [2022-11-23 14:22:41,410 INFO L226 Difference]: Without dead ends: 872 [2022-11-23 14:22:41,410 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 [2022-11-23 14:22:41,411 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 18 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:41,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 7 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:22:41,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-11-23 14:22:41,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2022-11-23 14:22:41,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 861 states have (on average 4.2926829268292686) internal successors, (3696), 871 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:41,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 3696 transitions. [2022-11-23 14:22:41,449 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 3696 transitions. Word has length 9 [2022-11-23 14:22:41,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:41,449 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 3696 transitions. [2022-11-23 14:22:41,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:41,449 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 3696 transitions. [2022-11-23 14:22:41,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 14:22:41,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:41,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:41,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:22:41,453 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:22:41,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:41,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1100697647, now seen corresponding path program 1 times [2022-11-23 14:22:41,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:41,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54163303] [2022-11-23 14:22:41,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:41,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:41,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:41,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54163303] [2022-11-23 14:22:41,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54163303] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:22:41,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825245365] [2022-11-23 14:22:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:41,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:41,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:41,602 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:41,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 14:22:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:41,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:22:41,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:22:41,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:22:41,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825245365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:41,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:22:41,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-11-23 14:22:41,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157044616] [2022-11-23 14:22:41,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:41,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:22:41,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:41,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:22:41,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:22:41,735 INFO L87 Difference]: Start difference. First operand 872 states and 3696 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) [2022-11-23 14:22:41,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:41,779 INFO L93 Difference]: Finished difference Result 644 states and 2744 transitions. [2022-11-23 14:22:41,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:22:41,780 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 10 [2022-11-23 14:22:41,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:41,785 INFO L225 Difference]: With dead ends: 644 [2022-11-23 14:22:41,785 INFO L226 Difference]: Without dead ends: 632 [2022-11-23 14:22:41,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:22:41,786 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:41,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 3 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:22:41,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-11-23 14:22:41,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 312. [2022-11-23 14:22:41,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 309 states have (on average 3.656957928802589) internal successors, (1130), 311 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 1130 transitions. [2022-11-23 14:22:41,805 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 1130 transitions. Word has length 10 [2022-11-23 14:22:41,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:41,805 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 1130 transitions. [2022-11-23 14:22:41,805 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) [2022-11-23 14:22:41,805 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 1130 transitions. [2022-11-23 14:22:41,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 14:22:41,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:41,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:41,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:22:42,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:42,016 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:22:42,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:42,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1100697625, now seen corresponding path program 1 times [2022-11-23 14:22:42,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:42,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925610410] [2022-11-23 14:22:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:42,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:22:42,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:42,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925610410] [2022-11-23 14:22:42,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925610410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:42,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:42,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:22:42,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104976154] [2022-11-23 14:22:42,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:42,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:22:42,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:42,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:22:42,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:22:42,080 INFO L87 Difference]: Start difference. First operand 312 states and 1130 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) 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) [2022-11-23 14:22:42,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:42,145 INFO L93 Difference]: Finished difference Result 246 states and 878 transitions. [2022-11-23 14:22:42,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:22:42,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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 10 [2022-11-23 14:22:42,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:42,148 INFO L225 Difference]: With dead ends: 246 [2022-11-23 14:22:42,148 INFO L226 Difference]: Without dead ends: 220 [2022-11-23 14:22:42,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:22:42,149 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:42,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 6 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:22:42,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-23 14:22:42,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2022-11-23 14:22:42,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 3.2420091324200913) internal successors, (710), 219 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:42,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 710 transitions. [2022-11-23 14:22:42,160 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 710 transitions. Word has length 10 [2022-11-23 14:22:42,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:42,160 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 710 transitions. [2022-11-23 14:22:42,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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) [2022-11-23 14:22:42,161 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 710 transitions. [2022-11-23 14:22:42,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 14:22:42,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:42,161 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:42,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 14:22:42,162 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 14:22:42,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:42,163 INFO L85 PathProgramCache]: Analyzing trace with hash 656933943, now seen corresponding path program 2 times [2022-11-23 14:22:42,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:42,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359204944] [2022-11-23 14:22:42,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:42,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:22:42,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:42,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359204944] [2022-11-23 14:22:42,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359204944] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:22:42,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561543253] [2022-11-23 14:22:42,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:22:42,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:42,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:42,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:42,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 14:22:42,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 14:22:42,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:22:42,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:22:42,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:42,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 14:22:42,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:22:42,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561543253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:42,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:22:42,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-11-23 14:22:42,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735622187] [2022-11-23 14:22:42,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:42,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:22:42,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:42,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:22:42,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:22:42,475 INFO L87 Difference]: Start difference. First operand 220 states and 710 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) [2022-11-23 14:22:42,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:42,536 INFO L93 Difference]: Finished difference Result 190 states and 611 transitions. [2022-11-23 14:22:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:22:42,536 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 12 [2022-11-23 14:22:42,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:42,537 INFO L225 Difference]: With dead ends: 190 [2022-11-23 14:22:42,537 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 14:22:42,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:22:42,538 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:42,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:22:42,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 14:22:42,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 14:22:42,539 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) [2022-11-23 14:22:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 14:22:42,539 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-11-23 14:22:42,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:42,539 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 14:22:42,540 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) [2022-11-23 14:22:42,540 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 14:22:42,540 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 14:22:42,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-11-23 14:22:42,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-23 14:22:42,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-23 14:22:42,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-23 14:22:42,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-23 14:22:42,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-23 14:22:42,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-23 14:22:42,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-23 14:22:42,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-11-23 14:22:42,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-11-23 14:22:42,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-11-23 14:22:42,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-23 14:22:42,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-23 14:22:42,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-23 14:22:42,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-23 14:22:42,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-23 14:22:42,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-23 14:22:42,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 14:22:42,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 14:22:42,749 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:42,753 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 14:22:42,753 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:22:42,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:22:42 BasicIcfg [2022-11-23 14:22:42,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:22:42,756 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:22:42,757 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:22:42,757 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:22:42,757 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:27" (3/4) ... [2022-11-23 14:22:42,759 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 14:22:42,763 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-23 14:22:42,763 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-23 14:22:42,764 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-23 14:22:42,770 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-23 14:22:42,770 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-23 14:22:42,770 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 14:22:42,770 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 14:22:42,816 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 14:22:42,816 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:22:42,817 INFO L158 Benchmark]: Toolchain (without parser) took 16613.24ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 127.1MB in the beginning and 176.8MB in the end (delta: -49.7MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2022-11-23 14:22:42,817 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 107.0MB. Free memory is still 53.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:22:42,817 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.85ms. Allocated memory is still 167.8MB. Free memory was 126.5MB in the beginning and 115.0MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 14:22:42,818 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.16ms. Allocated memory is still 167.8MB. Free memory was 115.0MB in the beginning and 112.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:22:42,818 INFO L158 Benchmark]: Boogie Preprocessor took 31.22ms. Allocated memory is still 167.8MB. Free memory was 112.9MB in the beginning and 111.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:22:42,818 INFO L158 Benchmark]: RCFGBuilder took 734.60ms. Allocated memory is still 167.8MB. Free memory was 111.4MB in the beginning and 136.0MB in the end (delta: -24.6MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2022-11-23 14:22:42,819 INFO L158 Benchmark]: TraceAbstraction took 15468.10ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 136.0MB in the beginning and 179.9MB in the end (delta: -43.9MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2022-11-23 14:22:42,819 INFO L158 Benchmark]: Witness Printer took 59.67ms. Allocated memory is still 243.3MB. Free memory was 179.9MB in the beginning and 176.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 14:22:42,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 107.0MB. Free memory is still 53.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.85ms. Allocated memory is still 167.8MB. Free memory was 126.5MB in the beginning and 115.0MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.16ms. Allocated memory is still 167.8MB. Free memory was 115.0MB in the beginning and 112.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.22ms. Allocated memory is still 167.8MB. Free memory was 112.9MB in the beginning and 111.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 734.60ms. Allocated memory is still 167.8MB. Free memory was 111.4MB in the beginning and 136.0MB in the end (delta: -24.6MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15468.10ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 136.0MB in the beginning and 179.9MB in the end (delta: -43.9MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. * Witness Printer took 59.67ms. Allocated memory is still 243.3MB. Free memory was 179.9MB in the beginning and 176.8MB in the end (delta: 3.1MB). 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: 8.4s, 166 PlacesBefore, 41 PlacesAfterwards, 168 TransitionsBefore, 35 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 7 FixpointIterations, 98 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 175 TotalNumberOfCompositions, 2865 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2483, independent: 2443, independent conditional: 0, independent unconditional: 2443, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1437, independent: 1424, independent conditional: 0, independent unconditional: 1424, 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: 1437, independent: 1424, independent conditional: 0, independent unconditional: 1424, 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: 70, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2483, independent: 1019, independent conditional: 0, independent unconditional: 1019, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 1437, unknown conditional: 0, unknown unconditional: 1437] , Statistics on independence cache: Total cache size (in pairs): 91, Positive cache size: 89, Positive conditional cache size: 0, Positive unconditional cache size: 89, 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: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: 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, 199 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 15.3s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 622 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 622 mSDsluCounter, 120 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 63 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1012 IncrementalHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 57 mSDtfsCounter, 1012 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=978occurred in iteration=10, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 3644 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 152 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 356 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1086 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 25 InterpolantComputations, 11 PerfectInterpolantSequences, 36/68 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 14:22:42,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a989e0-b53f-4cc5-afcd-dfa5a67a829d/bin/utaipan-Q6hlc19bkW/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