./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 5e519f3a 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_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/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_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-5e519f3 [2022-11-03 01:42:15,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:42:15,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:42:15,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:42:15,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:42:15,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:42:15,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:42:15,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:42:15,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:42:15,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:42:15,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:42:15,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:42:15,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:42:15,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:42:15,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:42:15,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:42:15,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:42:15,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:42:15,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:42:15,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:42:15,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:42:15,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:42:15,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:42:15,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:42:15,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:42:15,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:42:15,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:42:15,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:42:15,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:42:15,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:42:15,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:42:15,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:42:15,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:42:15,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:42:15,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:42:15,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:42:15,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:42:15,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:42:15,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:42:15,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:42:15,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:42:15,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 01:42:15,310 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:42:15,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:42:15,311 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:42:15,311 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:42:15,312 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:42:15,312 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:42:15,312 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:42:15,313 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:42:15,313 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:42:15,313 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:42:15,313 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:42:15,314 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:42:15,314 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:42:15,314 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:42:15,314 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:42:15,315 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:42:15,315 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:42:15,315 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:42:15,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:42:15,316 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:42:15,317 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 01:42:15,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:42:15,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:42:15,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:42:15,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:42:15,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:42:15,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:42:15,318 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 01:42:15,319 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:42:15,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:42:15,319 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:42:15,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:42:15,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:42:15,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:42:15,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:42:15,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:42:15,325 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:42:15,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:42:15,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:42:15,326 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:42:15,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:42:15,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:42:15,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:42:15,327 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_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 [2022-11-03 01:42:15,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:42:15,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:42:15,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:42:15,631 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:42:15,631 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:42:15,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2022-11-03 01:42:15,706 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/data/e35a169d1/b0cdafcc03a447f98c45bd86febdb94d/FLAG133c3739d [2022-11-03 01:42:16,165 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:42:16,166 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2022-11-03 01:42:16,172 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/data/e35a169d1/b0cdafcc03a447f98c45bd86febdb94d/FLAG133c3739d [2022-11-03 01:42:16,526 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/data/e35a169d1/b0cdafcc03a447f98c45bd86febdb94d [2022-11-03 01:42:16,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:42:16,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:42:16,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:42:16,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:42:16,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:42:16,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:42:16" (1/1) ... [2022-11-03 01:42:16,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7befc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:16, skipping insertion in model container [2022-11-03 01:42:16,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:42:16" (1/1) ... [2022-11-03 01:42:16,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:42:16,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:42:16,885 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c[2553,2566] [2022-11-03 01:42:16,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:42:16,903 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:42:16,942 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c[2553,2566] [2022-11-03 01:42:16,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:42:16,964 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:42:16,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:16 WrapperNode [2022-11-03 01:42:16,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:42:16,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:42:16,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:42:16,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:42:16,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:16" (1/1) ... [2022-11-03 01:42:16,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:16" (1/1) ... [2022-11-03 01:42:17,022 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 103 [2022-11-03 01:42:17,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:42:17,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:42:17,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:42:17,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:42:17,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:16" (1/1) ... [2022-11-03 01:42:17,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:16" (1/1) ... [2022-11-03 01:42:17,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:16" (1/1) ... [2022-11-03 01:42:17,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:16" (1/1) ... [2022-11-03 01:42:17,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:16" (1/1) ... [2022-11-03 01:42:17,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:16" (1/1) ... [2022-11-03 01:42:17,054 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:16" (1/1) ... [2022-11-03 01:42:17,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:16" (1/1) ... [2022-11-03 01:42:17,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:42:17,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:42:17,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:42:17,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:42:17,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:16" (1/1) ... [2022-11-03 01:42:17,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:42:17,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:42:17,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:42:17,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:42:17,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:42:17,151 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-03 01:42:17,152 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-03 01:42:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-03 01:42:17,152 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-03 01:42:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-03 01:42:17,152 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-03 01:42:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:42:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:42:17,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:42:17,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-03 01:42:17,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-03 01:42:17,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:42:17,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:42:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:42:17,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:42:17,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:42:17,155 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 01:42:17,252 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:42:17,254 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:42:17,665 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:42:17,765 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:42:17,766 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-03 01:42:17,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:42:17 BoogieIcfgContainer [2022-11-03 01:42:17,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:42:17,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:42:17,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:42:17,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:42:17,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:42:16" (1/3) ... [2022-11-03 01:42:17,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7145b854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:42:17, skipping insertion in model container [2022-11-03 01:42:17,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:16" (2/3) ... [2022-11-03 01:42:17,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7145b854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:42:17, skipping insertion in model container [2022-11-03 01:42:17,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:42:17" (3/3) ... [2022-11-03 01:42:17,780 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2022-11-03 01:42:17,790 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 01:42:17,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:42:17,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-03 01:42:17,801 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 01:42:17,883 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-03 01:42:17,920 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 01:42:17,934 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 168 transitions, 360 flow [2022-11-03 01:42:17,937 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 168 transitions, 360 flow [2022-11-03 01:42:17,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 168 transitions, 360 flow [2022-11-03 01:42:18,048 INFO L130 PetriNetUnfolder]: 12/165 cut-off events. [2022-11-03 01:42:18,048 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-03 01:42:18,053 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 133 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. [2022-11-03 01:42:18,056 INFO L118 LiptonReduction]: Number of co-enabled transitions 2184 [2022-11-03 01:42:25,707 INFO L133 LiptonReduction]: Checked pairs total: 2871 [2022-11-03 01:42:25,708 INFO L135 LiptonReduction]: Total number of compositions: 176 [2022-11-03 01:42:25,717 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 35 transitions, 94 flow [2022-11-03 01:42:25,773 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) [2022-11-03 01:42:25,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:42:25,799 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;@474d2654, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:42:25,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-03 01:42:25,803 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) [2022-11-03 01:42:25,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-03 01:42:25,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:25,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-03 01:42:25,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 01:42:25,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:25,823 INFO L85 PathProgramCache]: Analyzing trace with hash 22222, now seen corresponding path program 1 times [2022-11-03 01:42:25,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:25,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167068211] [2022-11-03 01:42:25,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:25,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:42:26,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:26,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167068211] [2022-11-03 01:42:26,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167068211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:26,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:26,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 01:42:26,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066843599] [2022-11-03 01:42:26,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:26,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:26,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:26,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:26,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:26,278 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) [2022-11-03 01:42:26,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:26,475 INFO L93 Difference]: Finished difference Result 735 states and 2405 transitions. [2022-11-03 01:42:26,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:26,479 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 [2022-11-03 01:42:26,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:26,514 INFO L225 Difference]: With dead ends: 735 [2022-11-03 01:42:26,514 INFO L226 Difference]: Without dead ends: 735 [2022-11-03 01:42:26,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:26,521 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 26 mSDsluCounter, 25 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 [2022-11-03 01:42:26,523 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] [2022-11-03 01:42:26,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-11-03 01:42:26,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 370. [2022-11-03 01:42:26,633 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) [2022-11-03 01:42:26,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1206 transitions. [2022-11-03 01:42:26,637 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1206 transitions. Word has length 2 [2022-11-03 01:42:26,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:26,638 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 1206 transitions. [2022-11-03 01:42:26,638 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) [2022-11-03 01:42:26,639 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1206 transitions. [2022-11-03 01:42:26,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 01:42:26,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:26,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 01:42:26,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:42:26,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 01:42:26,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:26,642 INFO L85 PathProgramCache]: Analyzing trace with hash 689776, now seen corresponding path program 1 times [2022-11-03 01:42:26,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:26,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168422711] [2022-11-03 01:42:26,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:26,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:42:26,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:26,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168422711] [2022-11-03 01:42:26,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168422711] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:42:26,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924102279] [2022-11-03 01:42:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:26,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:42:26,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:42:26,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:42:26,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:42:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:26,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:42:26,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:42:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:42:27,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:42:27,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924102279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:27,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:42:27,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-03 01:42:27,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308799886] [2022-11-03 01:42:27,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:27,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:42:27,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:27,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:42:27,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:42:27,016 INFO L87 Difference]: Start difference. First operand 370 states and 1206 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) [2022-11-03 01:42:27,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:27,160 INFO L93 Difference]: Finished difference Result 734 states and 2404 transitions. [2022-11-03 01:42:27,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:42:27,161 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 [2022-11-03 01:42:27,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:27,167 INFO L225 Difference]: With dead ends: 734 [2022-11-03 01:42:27,168 INFO L226 Difference]: Without dead ends: 734 [2022-11-03 01:42:27,168 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 [2022-11-03 01:42:27,169 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 53 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 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 [2022-11-03 01:42:27,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 9 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:42:27,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-11-03 01:42:27,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 369. [2022-11-03 01:42:27,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 342 states have (on average 3.5233918128654973) internal successors, (1205), 368 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:42:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 1205 transitions. [2022-11-03 01:42:27,194 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 1205 transitions. Word has length 3 [2022-11-03 01:42:27,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:27,195 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 1205 transitions. [2022-11-03 01:42:27,195 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) [2022-11-03 01:42:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 1205 transitions. [2022-11-03 01:42:27,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 01:42:27,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:27,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 01:42:27,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:42:27,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-03 01:42:27,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 01:42:27,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:27,415 INFO L85 PathProgramCache]: Analyzing trace with hash 689767, now seen corresponding path program 1 times [2022-11-03 01:42:27,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:27,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814743676] [2022-11-03 01:42:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:27,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:42:27,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:27,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814743676] [2022-11-03 01:42:27,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814743676] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:42:27,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521924224] [2022-11-03 01:42:27,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:27,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:42:27,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:42:27,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:42:27,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:42:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:27,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:42:27,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:42:27,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:42:27,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:42:27,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:42:27,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521924224] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:42:27,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1514165765] [2022-11-03 01:42:27,672 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) [2022-11-03 01:42:27,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:42:27,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-03 01:42:27,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405869884] [2022-11-03 01:42:27,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:42:27,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:42:27,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:27,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:42:27,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:42:27,678 INFO L87 Difference]: Start difference. First operand 369 states and 1205 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) [2022-11-03 01:42:27,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:27,957 INFO L93 Difference]: Finished difference Result 1832 states and 6007 transitions. [2022-11-03 01:42:27,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:42:27,957 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 [2022-11-03 01:42:27,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:27,974 INFO L225 Difference]: With dead ends: 1832 [2022-11-03 01:42:27,974 INFO L226 Difference]: Without dead ends: 1832 [2022-11-03 01:42:27,974 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 [2022-11-03 01:42:27,981 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 208 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:27,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 15 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:42:27,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2022-11-03 01:42:28,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 372. [2022-11-03 01:42:28,038 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) [2022-11-03 01:42:28,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1211 transitions. [2022-11-03 01:42:28,041 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1211 transitions. Word has length 3 [2022-11-03 01:42:28,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:28,041 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 1211 transitions. [2022-11-03 01:42:28,041 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) [2022-11-03 01:42:28,042 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1211 transitions. [2022-11-03 01:42:28,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 01:42:28,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:28,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 01:42:28,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:42:28,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:42:28,267 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 01:42:28,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:28,267 INFO L85 PathProgramCache]: Analyzing trace with hash 662913925, now seen corresponding path program 1 times [2022-11-03 01:42:28,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:28,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845081252] [2022-11-03 01:42:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:28,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:42:28,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:28,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845081252] [2022-11-03 01:42:28,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845081252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:28,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:28,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:42:28,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926234437] [2022-11-03 01:42:28,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:28,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:28,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:28,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:28,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:28,390 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) [2022-11-03 01:42:28,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:28,486 INFO L93 Difference]: Finished difference Result 550 states and 1782 transitions. [2022-11-03 01:42:28,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:28,487 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 [2022-11-03 01:42:28,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:28,492 INFO L225 Difference]: With dead ends: 550 [2022-11-03 01:42:28,492 INFO L226 Difference]: Without dead ends: 550 [2022-11-03 01:42:28,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:28,498 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 23 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 [2022-11-03 01:42:28,499 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] [2022-11-03 01:42:28,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-11-03 01:42:28,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 434. [2022-11-03 01:42:28,518 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) [2022-11-03 01:42:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1480 transitions. [2022-11-03 01:42:28,525 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1480 transitions. Word has length 5 [2022-11-03 01:42:28,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:28,525 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 1480 transitions. [2022-11-03 01:42:28,525 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) [2022-11-03 01:42:28,526 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1480 transitions. [2022-11-03 01:42:28,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 01:42:28,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:28,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 01:42:28,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:42:28,527 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 01:42:28,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:28,529 INFO L85 PathProgramCache]: Analyzing trace with hash -924503312, now seen corresponding path program 1 times [2022-11-03 01:42:28,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:28,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026981803] [2022-11-03 01:42:28,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:28,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:42:28,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:28,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026981803] [2022-11-03 01:42:28,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026981803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:42:28,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436891076] [2022-11-03 01:42:28,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:28,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:42:28,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:42:28,698 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:42:28,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:42:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:28,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:42:28,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:42:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:42:28,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:42:28,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436891076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:28,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:42:28,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2022-11-03 01:42:28,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938820626] [2022-11-03 01:42:28,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:28,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:42:28,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:28,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:42:28,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:42:28,845 INFO L87 Difference]: Start difference. First operand 434 states and 1480 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) [2022-11-03 01:42:28,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:28,933 INFO L93 Difference]: Finished difference Result 434 states and 1479 transitions. [2022-11-03 01:42:28,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:28,934 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 [2022-11-03 01:42:28,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:28,938 INFO L225 Difference]: With dead ends: 434 [2022-11-03 01:42:28,939 INFO L226 Difference]: Without dead ends: 434 [2022-11-03 01:42:28,939 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 [2022-11-03 01:42:28,940 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:28,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:42:28,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-03 01:42:28,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2022-11-03 01:42:28,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 407 states have (on average 3.633906633906634) internal successors, (1479), 433 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:42:28,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1479 transitions. [2022-11-03 01:42:28,960 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1479 transitions. Word has length 6 [2022-11-03 01:42:28,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:28,960 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 1479 transitions. [2022-11-03 01:42:28,960 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) [2022-11-03 01:42:28,960 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1479 transitions. [2022-11-03 01:42:28,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 01:42:28,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:28,961 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-03 01:42:29,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:42:29,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:42:29,182 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 01:42:29,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:29,183 INFO L85 PathProgramCache]: Analyzing trace with hash -924831931, now seen corresponding path program 2 times [2022-11-03 01:42:29,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:29,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676514638] [2022-11-03 01:42:29,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:29,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:42:29,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:29,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676514638] [2022-11-03 01:42:29,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676514638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:42:29,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311362338] [2022-11-03 01:42:29,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:42:29,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:42:29,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:42:29,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:42:29,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:42:29,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 01:42:29,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:42:29,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:42:29,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:42:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 01:42:29,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:42:29,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311362338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:29,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:42:29,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-03 01:42:29,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175903179] [2022-11-03 01:42:29,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:29,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:29,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:29,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:29,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:42:29,449 INFO L87 Difference]: Start difference. First operand 434 states and 1479 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) [2022-11-03 01:42:29,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:29,491 INFO L93 Difference]: Finished difference Result 433 states and 1478 transitions. [2022-11-03 01:42:29,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:29,491 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 [2022-11-03 01:42:29,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:29,495 INFO L225 Difference]: With dead ends: 433 [2022-11-03 01:42:29,495 INFO L226 Difference]: Without dead ends: 433 [2022-11-03 01:42:29,495 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 [2022-11-03 01:42:29,496 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 [2022-11-03 01:42:29,496 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] [2022-11-03 01:42:29,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-03 01:42:29,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 430. [2022-11-03 01:42:29,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 404 states have (on average 3.6435643564356437) internal successors, (1472), 429 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:42:29,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1472 transitions. [2022-11-03 01:42:29,512 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1472 transitions. Word has length 6 [2022-11-03 01:42:29,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:29,512 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 1472 transitions. [2022-11-03 01:42:29,513 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) [2022-11-03 01:42:29,513 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1472 transitions. [2022-11-03 01:42:29,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 01:42:29,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:29,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:29,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:42:29,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 01:42:29,730 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 01:42:29,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:29,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1395310994, now seen corresponding path program 1 times [2022-11-03 01:42:29,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:29,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774425760] [2022-11-03 01:42:29,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:29,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:42:29,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:29,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774425760] [2022-11-03 01:42:29,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774425760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:42:29,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431712506] [2022-11-03 01:42:29,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:29,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:42:29,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:42:29,813 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:42:29,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 01:42:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:29,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:42:29,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:42:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:42:29,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:42:29,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:42:29,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431712506] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:42:29,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [34768559] [2022-11-03 01:42:29,971 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) [2022-11-03 01:42:29,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:42:29,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-03 01:42:29,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21751377] [2022-11-03 01:42:29,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:42:29,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:42:29,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:29,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:42:29,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:42:29,977 INFO L87 Difference]: Start difference. First operand 430 states and 1472 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) [2022-11-03 01:42:30,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:30,182 INFO L93 Difference]: Finished difference Result 1080 states and 3673 transitions. [2022-11-03 01:42:30,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:42:30,183 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 [2022-11-03 01:42:30,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:30,190 INFO L225 Difference]: With dead ends: 1080 [2022-11-03 01:42:30,191 INFO L226 Difference]: Without dead ends: 1080 [2022-11-03 01:42:30,191 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 [2022-11-03 01:42:30,192 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 156 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 17 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 [2022-11-03 01:42:30,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 17 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:42:30,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2022-11-03 01:42:30,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 616. [2022-11-03 01:42:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 590 states have (on average 4.177966101694915) internal successors, (2465), 615 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:42:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 2465 transitions. [2022-11-03 01:42:30,236 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 2465 transitions. Word has length 7 [2022-11-03 01:42:30,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:30,237 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 2465 transitions. [2022-11-03 01:42:30,237 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) [2022-11-03 01:42:30,237 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 2465 transitions. [2022-11-03 01:42:30,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 01:42:30,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:30,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:30,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:42:30,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:42:30,462 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 01:42:30,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:30,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1395311022, now seen corresponding path program 1 times [2022-11-03 01:42:30,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:30,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167528548] [2022-11-03 01:42:30,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:30,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:30,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:42:30,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:30,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167528548] [2022-11-03 01:42:30,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167528548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:30,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:30,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:42:30,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426611631] [2022-11-03 01:42:30,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:30,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:30,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:30,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:30,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:30,519 INFO L87 Difference]: Start difference. First operand 616 states and 2465 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:42:30,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:30,588 INFO L93 Difference]: Finished difference Result 554 states and 2070 transitions. [2022-11-03 01:42:30,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:30,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 01:42:30,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:30,593 INFO L225 Difference]: With dead ends: 554 [2022-11-03 01:42:30,593 INFO L226 Difference]: Without dead ends: 554 [2022-11-03 01:42:30,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:30,594 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-11-03 01:42:30,595 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] [2022-11-03 01:42:30,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-11-03 01:42:30,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2022-11-03 01:42:30,613 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) [2022-11-03 01:42:30,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 2070 transitions. [2022-11-03 01:42:30,618 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 2070 transitions. Word has length 7 [2022-11-03 01:42:30,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:30,618 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 2070 transitions. [2022-11-03 01:42:30,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:42:30,619 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 2070 transitions. [2022-11-03 01:42:30,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 01:42:30,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:30,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:30,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:42:30,620 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 01:42:30,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:30,621 INFO L85 PathProgramCache]: Analyzing trace with hash 310667599, now seen corresponding path program 1 times [2022-11-03 01:42:30,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:30,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125666488] [2022-11-03 01:42:30,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:30,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:42:30,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:30,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125666488] [2022-11-03 01:42:30,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125666488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:30,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:30,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:42:30,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783684645] [2022-11-03 01:42:30,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:30,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:30,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:30,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:30,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:30,699 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) [2022-11-03 01:42:30,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:30,786 INFO L93 Difference]: Finished difference Result 770 states and 2877 transitions. [2022-11-03 01:42:30,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:30,787 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 [2022-11-03 01:42:30,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:30,810 INFO L225 Difference]: With dead ends: 770 [2022-11-03 01:42:30,810 INFO L226 Difference]: Without dead ends: 770 [2022-11-03 01:42:30,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:30,813 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 21 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 [2022-11-03 01:42:30,814 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] [2022-11-03 01:42:30,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-11-03 01:42:30,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 660. [2022-11-03 01:42:30,837 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) [2022-11-03 01:42:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 2578 transitions. [2022-11-03 01:42:30,842 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 2578 transitions. Word has length 8 [2022-11-03 01:42:30,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:30,842 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 2578 transitions. [2022-11-03 01:42:30,842 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) [2022-11-03 01:42:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 2578 transitions. [2022-11-03 01:42:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 01:42:30,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:30,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:30,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:42:30,846 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 01:42:30,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:30,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1040762736, now seen corresponding path program 1 times [2022-11-03 01:42:30,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:30,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668313279] [2022-11-03 01:42:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:30,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:30,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:42:30,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:30,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668313279] [2022-11-03 01:42:30,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668313279] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:42:30,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115006460] [2022-11-03 01:42:30,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:30,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:42:30,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:42:30,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:42:30,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 01:42:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:31,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:42:31,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:42:31,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:42:31,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:42:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:42:31,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115006460] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:42:31,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1062262510] [2022-11-03 01:42:31,084 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) [2022-11-03 01:42:31,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:42:31,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-03 01:42:31,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167816510] [2022-11-03 01:42:31,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:42:31,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:42:31,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:31,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:42:31,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:42:31,090 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) [2022-11-03 01:42:31,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:31,277 INFO L93 Difference]: Finished difference Result 1418 states and 5616 transitions. [2022-11-03 01:42:31,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:42:31,278 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 [2022-11-03 01:42:31,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:31,288 INFO L225 Difference]: With dead ends: 1418 [2022-11-03 01:42:31,289 INFO L226 Difference]: Without dead ends: 1418 [2022-11-03 01:42:31,289 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 [2022-11-03 01:42:31,290 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 153 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:31,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 15 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:42:31,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2022-11-03 01:42:31,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 978. [2022-11-03 01:42:31,332 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) [2022-11-03 01:42:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 4420 transitions. [2022-11-03 01:42:31,339 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 4420 transitions. Word has length 9 [2022-11-03 01:42:31,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:31,340 INFO L495 AbstractCegarLoop]: Abstraction has 978 states and 4420 transitions. [2022-11-03 01:42:31,340 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) [2022-11-03 01:42:31,340 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 4420 transitions. [2022-11-03 01:42:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 01:42:31,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:31,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:31,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 01:42:31,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 01:42:31,562 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 01:42:31,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:31,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1040762775, now seen corresponding path program 1 times [2022-11-03 01:42:31,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:31,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390625146] [2022-11-03 01:42:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:31,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:42:31,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:31,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390625146] [2022-11-03 01:42:31,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390625146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:31,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:31,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:42:31,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112757882] [2022-11-03 01:42:31,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:31,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:31,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:31,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:31,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:31,632 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) [2022-11-03 01:42:31,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:31,705 INFO L93 Difference]: Finished difference Result 872 states and 3696 transitions. [2022-11-03 01:42:31,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:31,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 01:42:31,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:31,713 INFO L225 Difference]: With dead ends: 872 [2022-11-03 01:42:31,713 INFO L226 Difference]: Without dead ends: 872 [2022-11-03 01:42:31,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:31,714 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 18 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-11-03 01:42:31,715 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] [2022-11-03 01:42:31,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-11-03 01:42:31,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2022-11-03 01:42:31,753 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) [2022-11-03 01:42:31,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 3696 transitions. [2022-11-03 01:42:31,761 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 3696 transitions. Word has length 9 [2022-11-03 01:42:31,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:31,762 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 3696 transitions. [2022-11-03 01:42:31,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:42:31,762 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 3696 transitions. [2022-11-03 01:42:31,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 01:42:31,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:31,767 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:31,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 01:42:31,767 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 01:42:31,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:31,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1017814115, now seen corresponding path program 2 times [2022-11-03 01:42:31,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:31,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075911791] [2022-11-03 01:42:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:31,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:31,928 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 01:42:31,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:31,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075911791] [2022-11-03 01:42:31,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075911791] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:42:31,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259509315] [2022-11-03 01:42:31,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:42:31,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:42:31,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:42:31,930 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:42:31,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 01:42:32,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 01:42:32,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:42:32,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:42:32,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:42:32,056 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 01:42:32,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:42:32,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259509315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:32,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:42:32,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-03 01:42:32,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656392828] [2022-11-03 01:42:32,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:32,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:32,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:32,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:32,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:42:32,059 INFO L87 Difference]: Start difference. First operand 872 states and 3696 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:42:32,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:32,102 INFO L93 Difference]: Finished difference Result 644 states and 2744 transitions. [2022-11-03 01:42:32,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:32,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 01:42:32,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:32,108 INFO L225 Difference]: With dead ends: 644 [2022-11-03 01:42:32,109 INFO L226 Difference]: Without dead ends: 632 [2022-11-03 01:42:32,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:42:32,110 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 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 [2022-11-03 01:42:32,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 3 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:42:32,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-11-03 01:42:32,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 312. [2022-11-03 01:42:32,125 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) [2022-11-03 01:42:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 1130 transitions. [2022-11-03 01:42:32,127 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 1130 transitions. Word has length 10 [2022-11-03 01:42:32,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:32,128 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 1130 transitions. [2022-11-03 01:42:32,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:42:32,128 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 1130 transitions. [2022-11-03 01:42:32,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 01:42:32,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:32,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:32,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 01:42:32,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 01:42:32,354 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 01:42:32,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:32,355 INFO L85 PathProgramCache]: Analyzing trace with hash -2090774435, now seen corresponding path program 1 times [2022-11-03 01:42:32,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:32,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466756902] [2022-11-03 01:42:32,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:32,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:42:32,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:32,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466756902] [2022-11-03 01:42:32,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466756902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:32,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:32,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:42:32,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738855123] [2022-11-03 01:42:32,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:32,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:42:32,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:32,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:42:32,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:42:32,460 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) [2022-11-03 01:42:32,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:32,530 INFO L93 Difference]: Finished difference Result 246 states and 878 transitions. [2022-11-03 01:42:32,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:42:32,531 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 [2022-11-03 01:42:32,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:32,533 INFO L225 Difference]: With dead ends: 246 [2022-11-03 01:42:32,533 INFO L226 Difference]: Without dead ends: 220 [2022-11-03 01:42:32,533 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 [2022-11-03 01:42:32,535 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:32,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:42:32,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-03 01:42:32,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2022-11-03 01:42:32,551 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) [2022-11-03 01:42:32,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 710 transitions. [2022-11-03 01:42:32,553 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 710 transitions. Word has length 10 [2022-11-03 01:42:32,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:32,553 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 710 transitions. [2022-11-03 01:42:32,553 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) [2022-11-03 01:42:32,553 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 710 transitions. [2022-11-03 01:42:32,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:42:32,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:32,554 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:32,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 01:42:32,555 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-03 01:42:32,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:32,556 INFO L85 PathProgramCache]: Analyzing trace with hash -4494961, now seen corresponding path program 2 times [2022-11-03 01:42:32,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:32,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116158476] [2022-11-03 01:42:32,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:32,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:32,659 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:42:32,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:32,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116158476] [2022-11-03 01:42:32,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116158476] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:42:32,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419196389] [2022-11-03 01:42:32,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:42:32,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:42:32,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:42:32,662 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:42:32,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 01:42:32,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 01:42:32,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:42:32,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:42:32,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:42:32,789 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 01:42:32,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:42:32,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419196389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:32,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:42:32,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-11-03 01:42:32,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509652217] [2022-11-03 01:42:32,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:32,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:32,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:32,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:32,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:42:32,791 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) [2022-11-03 01:42:32,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:32,818 INFO L93 Difference]: Finished difference Result 190 states and 611 transitions. [2022-11-03 01:42:32,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:32,818 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 [2022-11-03 01:42:32,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:32,819 INFO L225 Difference]: With dead ends: 190 [2022-11-03 01:42:32,819 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 01:42:32,820 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 [2022-11-03 01:42:32,820 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, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:32,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:42:32,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 01:42:32,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 01:42:32,821 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) [2022-11-03 01:42:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 01:42:32,822 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-11-03 01:42:32,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:32,822 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 01:42:32,822 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) [2022-11-03 01:42:32,822 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 01:42:32,823 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 01:42:32,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-11-03 01:42:32,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-03 01:42:32,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-03 01:42:32,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-03 01:42:32,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-03 01:42:32,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-03 01:42:32,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-03 01:42:32,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-03 01:42:32,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-11-03 01:42:32,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-11-03 01:42:32,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-11-03 01:42:32,829 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-03 01:42:32,829 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-03 01:42:32,829 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-03 01:42:32,829 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-03 01:42:32,830 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-03 01:42:32,830 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-03 01:42:32,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 01:42:33,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 01:42:33,060 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:33,064 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-03 01:42:33,065 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:42:33,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:42:33 BasicIcfg [2022-11-03 01:42:33,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:42:33,069 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:42:33,069 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:42:33,069 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:42:33,070 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:42:17" (3/4) ... [2022-11-03 01:42:33,073 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 01:42:33,079 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-03 01:42:33,079 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-03 01:42:33,079 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-03 01:42:33,087 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-03 01:42:33,087 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-03 01:42:33,088 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 01:42:33,088 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 01:42:33,139 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 01:42:33,140 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:42:33,140 INFO L158 Benchmark]: Toolchain (without parser) took 16610.67ms. Allocated memory was 94.4MB in the beginning and 163.6MB in the end (delta: 69.2MB). Free memory was 71.9MB in the beginning and 93.5MB in the end (delta: -21.6MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2022-11-03 01:42:33,141 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory is still 67.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:42:33,141 INFO L158 Benchmark]: CACSL2BoogieTranslator took 434.13ms. Allocated memory is still 94.4MB. Free memory was 71.6MB in the beginning and 68.5MB in the end (delta: 3.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 01:42:33,142 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.91ms. Allocated memory is still 94.4MB. Free memory was 68.3MB in the beginning and 66.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:42:33,143 INFO L158 Benchmark]: Boogie Preprocessor took 33.05ms. Allocated memory is still 94.4MB. Free memory was 66.6MB in the beginning and 65.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:42:33,143 INFO L158 Benchmark]: RCFGBuilder took 709.77ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 65.0MB in the beginning and 85.5MB in the end (delta: -20.5MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2022-11-03 01:42:33,144 INFO L158 Benchmark]: TraceAbstraction took 15296.47ms. Allocated memory was 113.2MB in the beginning and 163.6MB in the end (delta: 50.3MB). Free memory was 85.0MB in the beginning and 96.6MB in the end (delta: -11.6MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. [2022-11-03 01:42:33,144 INFO L158 Benchmark]: Witness Printer took 71.32ms. Allocated memory is still 163.6MB. Free memory was 96.6MB in the beginning and 93.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 01:42:33,149 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory is still 67.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 434.13ms. Allocated memory is still 94.4MB. Free memory was 71.6MB in the beginning and 68.5MB in the end (delta: 3.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.91ms. Allocated memory is still 94.4MB. Free memory was 68.3MB in the beginning and 66.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.05ms. Allocated memory is still 94.4MB. Free memory was 66.6MB in the beginning and 65.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 709.77ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 65.0MB in the beginning and 85.5MB in the end (delta: -20.5MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. * TraceAbstraction took 15296.47ms. Allocated memory was 113.2MB in the beginning and 163.6MB in the end (delta: 50.3MB). Free memory was 85.0MB in the beginning and 96.6MB in the end (delta: -11.6MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. * Witness Printer took 71.32ms. Allocated memory is still 163.6MB. Free memory was 96.6MB in the beginning and 93.5MB 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: 7.8s, 166 PlacesBefore, 41 PlacesAfterwards, 168 TransitionsBefore, 35 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 7 FixpointIterations, 99 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 176 TotalNumberOfCompositions, 2871 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2465, positive: 2425, positive conditional: 0, positive unconditional: 2425, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1517, positive: 1505, positive conditional: 0, positive unconditional: 1505, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1517, positive: 1505, positive conditional: 0, positive unconditional: 1505, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 76, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2465, positive: 920, positive conditional: 0, positive unconditional: 920, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 1517, unknown conditional: 0, unknown unconditional: 1517] , 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 - 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: 15.1s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 754 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 754 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 476 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 943 IncrementalHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 57 mSDtfsCounter, 943 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 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, 3643 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 153 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 357 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1045 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 25 InterpolantComputations, 11 PerfectInterpolantSequences, 53/89 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! [2022-11-03 01:42:33,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90821259-5b92-49bf-ba04-2661615a6aa5/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE