./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/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_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/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_b02d0d31-8de3-4467-8cae-a5c2ef211b81/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 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --- 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 02:15:28,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:15:28,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:15:28,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:15:28,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:15:28,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:15:28,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:15:28,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:15:28,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:15:28,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:15:28,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:15:28,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:15:28,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:15:28,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:15:28,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:15:28,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:15:28,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:15:28,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:15:28,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:15:28,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:15:28,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:15:28,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:15:28,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:15:28,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:15:28,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:15:28,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:15:28,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:15:28,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:15:28,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:15:28,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:15:28,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:15:28,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:15:28,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:15:28,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:15:28,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:15:28,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:15:28,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:15:28,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:15:28,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:15:28,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:15:28,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:15:28,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 02:15:28,155 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:15:28,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:15:28,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:15:28,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:15:28,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:15:28,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:15:28,158 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:15:28,158 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:15:28,158 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:15:28,159 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:15:28,159 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:15:28,159 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:15:28,160 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:15:28,160 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:15:28,160 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:15:28,160 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:15:28,161 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:15:28,161 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:15:28,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:15:28,162 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:15:28,162 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 02:15:28,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:15:28,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:15:28,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:15:28,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:15:28,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:15:28,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:15:28,164 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 02:15:28,164 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:15:28,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:15:28,165 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:15:28,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:15:28,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:15:28,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:15:28,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:15:28,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:15:28,166 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:15:28,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:15:28,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:15:28,167 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:15:28,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:15:28,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:15:28,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:15:28,168 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_b02d0d31-8de3-4467-8cae-a5c2ef211b81/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 [2022-11-03 02:15:28,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:15:28,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:15:28,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:15:28,518 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:15:28,519 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:15:28,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2022-11-03 02:15:28,605 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/data/ce5dd8643/d20543fe1b2f429a9a52d1f2122d3c03/FLAG8ad8e5d68 [2022-11-03 02:15:29,190 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:15:29,191 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2022-11-03 02:15:29,202 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/data/ce5dd8643/d20543fe1b2f429a9a52d1f2122d3c03/FLAG8ad8e5d68 [2022-11-03 02:15:29,492 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/data/ce5dd8643/d20543fe1b2f429a9a52d1f2122d3c03 [2022-11-03 02:15:29,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:15:29,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:15:29,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:15:29,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:15:29,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:15:29,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:15:29" (1/1) ... [2022-11-03 02:15:29,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20612305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:29, skipping insertion in model container [2022-11-03 02:15:29,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:15:29" (1/1) ... [2022-11-03 02:15:29,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:15:29,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:15:29,960 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_b02d0d31-8de3-4467-8cae-a5c2ef211b81/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-11-03 02:15:29,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:15:29,994 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:15:30,038 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_b02d0d31-8de3-4467-8cae-a5c2ef211b81/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-11-03 02:15:30,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:15:30,071 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:15:30,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:30 WrapperNode [2022-11-03 02:15:30,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:15:30,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:15:30,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:15:30,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:15:30,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:30" (1/1) ... [2022-11-03 02:15:30,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:30" (1/1) ... [2022-11-03 02:15:30,166 INFO L138 Inliner]: procedures = 28, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 421 [2022-11-03 02:15:30,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:15:30,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:15:30,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:15:30,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:15:30,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:30" (1/1) ... [2022-11-03 02:15:30,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:30" (1/1) ... [2022-11-03 02:15:30,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:30" (1/1) ... [2022-11-03 02:15:30,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:30" (1/1) ... [2022-11-03 02:15:30,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:30" (1/1) ... [2022-11-03 02:15:30,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:30" (1/1) ... [2022-11-03 02:15:30,259 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:30" (1/1) ... [2022-11-03 02:15:30,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:30" (1/1) ... [2022-11-03 02:15:30,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:15:30,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:15:30,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:15:30,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:15:30,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:30" (1/1) ... [2022-11-03 02:15:30,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:15:30,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:15:30,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:15:30,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:15:30,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:15:30,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:15:30,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:15:30,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:15:30,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:15:30,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:15:30,369 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-03 02:15:30,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-03 02:15:30,369 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-03 02:15:30,370 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-03 02:15:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-03 02:15:30,370 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-03 02:15:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:15:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-03 02:15:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-03 02:15:30,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:15:30,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:15:30,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:15:30,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:15:30,373 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 02:15:30,524 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:15:30,527 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:15:31,381 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:15:31,919 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:15:31,920 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-03 02:15:31,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:15:31 BoogieIcfgContainer [2022-11-03 02:15:31,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:15:31,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:15:31,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:15:31,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:15:31,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:15:29" (1/3) ... [2022-11-03 02:15:31,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27590815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:15:31, skipping insertion in model container [2022-11-03 02:15:31,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:30" (2/3) ... [2022-11-03 02:15:31,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27590815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:15:31, skipping insertion in model container [2022-11-03 02:15:31,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:15:31" (3/3) ... [2022-11-03 02:15:31,948 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2022-11-03 02:15:31,963 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 02:15:31,980 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:15:31,981 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-11-03 02:15:31,981 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 02:15:32,176 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-03 02:15:32,264 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:15:32,281 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 422 places, 449 transitions, 922 flow [2022-11-03 02:15:32,284 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 422 places, 449 transitions, 922 flow [2022-11-03 02:15:32,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 422 places, 449 transitions, 922 flow [2022-11-03 02:15:32,577 INFO L130 PetriNetUnfolder]: 37/446 cut-off events. [2022-11-03 02:15:32,578 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-03 02:15:32,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 446 events. 37/446 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 590 event pairs, 0 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 360. Up to 2 conditions per place. [2022-11-03 02:15:32,595 INFO L118 LiptonReduction]: Number of co-enabled transitions 7238 [2022-11-03 02:15:59,897 INFO L133 LiptonReduction]: Checked pairs total: 9915 [2022-11-03 02:15:59,897 INFO L135 LiptonReduction]: Total number of compositions: 530 [2022-11-03 02:15:59,907 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 63 transitions, 150 flow [2022-11-03 02:15:59,980 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 644 states, 587 states have (on average 3.5996592844974447) internal successors, (2113), 643 states have internal predecessors, (2113), 0 states have call successors, (0), 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 02:16:00,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:16:00,010 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;@39c526f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:16:00,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-03 02:16:00,015 INFO L276 IsEmpty]: Start isEmpty. Operand has 644 states, 587 states have (on average 3.5996592844974447) internal successors, (2113), 643 states have internal predecessors, (2113), 0 states have call successors, (0), 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 02:16:00,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-03 02:16:00,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:00,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-03 02:16:00,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:00,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:00,029 INFO L85 PathProgramCache]: Analyzing trace with hash 63811, now seen corresponding path program 1 times [2022-11-03 02:16:00,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:00,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755358031] [2022-11-03 02:16:00,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:00,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:00,514 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 02:16:00,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:00,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755358031] [2022-11-03 02:16:00,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755358031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:00,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:00,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:16:00,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340793428] [2022-11-03 02:16:00,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:00,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:00,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:00,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:00,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:00,567 INFO L87 Difference]: Start difference. First operand has 644 states, 587 states have (on average 3.5996592844974447) internal successors, (2113), 643 states have internal predecessors, (2113), 0 states have call successors, (0), 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 02:16:00,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:00,881 INFO L93 Difference]: Finished difference Result 671 states and 2117 transitions. [2022-11-03 02:16:00,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:00,884 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 02:16:00,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:00,907 INFO L225 Difference]: With dead ends: 671 [2022-11-03 02:16:00,907 INFO L226 Difference]: Without dead ends: 667 [2022-11-03 02:16:00,908 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 02:16:00,912 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 33 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:00,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 4 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:16:00,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-11-03 02:16:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 342. [2022-11-03 02:16:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 316 states have (on average 3.3797468354430378) internal successors, (1068), 341 states have internal predecessors, (1068), 0 states have call successors, (0), 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 02:16:00,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 1068 transitions. [2022-11-03 02:16:00,985 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 1068 transitions. Word has length 2 [2022-11-03 02:16:00,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:00,985 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 1068 transitions. [2022-11-03 02:16:00,986 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 02:16:00,986 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 1068 transitions. [2022-11-03 02:16:00,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 02:16:00,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:00,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 02:16:00,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:16:00,987 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:00,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:00,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1982029, now seen corresponding path program 1 times [2022-11-03 02:16:00,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:00,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212416201] [2022-11-03 02:16:00,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:00,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:01,108 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 02:16:01,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:01,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212416201] [2022-11-03 02:16:01,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212416201] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:01,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571577571] [2022-11-03 02:16:01,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:01,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:01,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:01,112 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:01,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:16:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:01,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:16:01,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:01,324 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 02:16:01,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:16:01,346 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 02:16:01,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571577571] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:16:01,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [649940717] [2022-11-03 02:16:01,356 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 02:16:01,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:16:01,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-03 02:16:01,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425755128] [2022-11-03 02:16:01,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:16:01,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:16:01,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:01,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:16:01,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:16:01,363 INFO L87 Difference]: Start difference. First operand 342 states and 1068 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 02:16:02,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:02,044 INFO L93 Difference]: Finished difference Result 1654 states and 5266 transitions. [2022-11-03 02:16:02,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:16:02,046 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 02:16:02,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:02,067 INFO L225 Difference]: With dead ends: 1654 [2022-11-03 02:16:02,067 INFO L226 Difference]: Without dead ends: 1654 [2022-11-03 02:16:02,068 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 02:16:02,072 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 251 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:02,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 12 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:16:02,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2022-11-03 02:16:02,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 354. [2022-11-03 02:16:02,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 328 states have (on average 3.3841463414634148) internal successors, (1110), 353 states have internal predecessors, (1110), 0 states have call successors, (0), 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 02:16:02,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 1110 transitions. [2022-11-03 02:16:02,162 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 1110 transitions. Word has length 3 [2022-11-03 02:16:02,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:02,163 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 1110 transitions. [2022-11-03 02:16:02,163 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 02:16:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 1110 transitions. [2022-11-03 02:16:02,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 02:16:02,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:02,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 02:16:02,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:16:02,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:02,365 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:02,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:02,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1982030, now seen corresponding path program 1 times [2022-11-03 02:16:02,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:02,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306757442] [2022-11-03 02:16:02,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:02,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:02,519 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 02:16:02,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:02,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306757442] [2022-11-03 02:16:02,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306757442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:02,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:02,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:16:02,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831784369] [2022-11-03 02:16:02,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:02,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:02,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:02,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:02,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:02,523 INFO L87 Difference]: Start difference. First operand 354 states and 1110 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:16:02,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:02,645 INFO L93 Difference]: Finished difference Result 350 states and 1094 transitions. [2022-11-03 02:16:02,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:02,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-03 02:16:02,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:02,649 INFO L225 Difference]: With dead ends: 350 [2022-11-03 02:16:02,649 INFO L226 Difference]: Without dead ends: 350 [2022-11-03 02:16:02,649 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 02:16:02,651 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:02,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 2 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:16:02,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-03 02:16:02,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2022-11-03 02:16:02,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 328 states have (on average 3.3353658536585367) internal successors, (1094), 349 states have internal predecessors, (1094), 0 states have call successors, (0), 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 02:16:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1094 transitions. [2022-11-03 02:16:02,669 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1094 transitions. Word has length 3 [2022-11-03 02:16:02,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:02,669 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 1094 transitions. [2022-11-03 02:16:02,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:16:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1094 transitions. [2022-11-03 02:16:02,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 02:16:02,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:02,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 02:16:02,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:16:02,671 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:02,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:02,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1906399919, now seen corresponding path program 1 times [2022-11-03 02:16:02,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:02,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115977117] [2022-11-03 02:16:02,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:02,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:02,787 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 02:16:02,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:02,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115977117] [2022-11-03 02:16:02,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115977117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:02,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:02,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:16:02,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120469062] [2022-11-03 02:16:02,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:02,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:02,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:02,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:02,790 INFO L87 Difference]: Start difference. First operand 350 states and 1094 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 02:16:02,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:02,990 INFO L93 Difference]: Finished difference Result 679 states and 2152 transitions. [2022-11-03 02:16:02,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:02,991 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 02:16:02,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:03,003 INFO L225 Difference]: With dead ends: 679 [2022-11-03 02:16:03,004 INFO L226 Difference]: Without dead ends: 679 [2022-11-03 02:16:03,005 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 02:16:03,008 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 32 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:03,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 4 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:16:03,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-11-03 02:16:03,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 351. [2022-11-03 02:16:03,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 329 states have (on average 3.3313069908814588) internal successors, (1096), 350 states have internal predecessors, (1096), 0 states have call successors, (0), 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 02:16:03,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 1096 transitions. [2022-11-03 02:16:03,043 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 1096 transitions. Word has length 5 [2022-11-03 02:16:03,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:03,044 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 1096 transitions. [2022-11-03 02:16:03,044 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 02:16:03,044 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 1096 transitions. [2022-11-03 02:16:03,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 02:16:03,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:03,045 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-03 02:16:03,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:16:03,046 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:03,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:03,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1079055421, now seen corresponding path program 2 times [2022-11-03 02:16:03,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:03,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215306981] [2022-11-03 02:16:03,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:03,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:03,325 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 02:16:03,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:03,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215306981] [2022-11-03 02:16:03,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215306981] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:03,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792387062] [2022-11-03 02:16:03,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:16:03,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:03,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:03,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:03,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:16:03,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 02:16:03,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:16:03,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:16:03,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:03,529 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 02:16:03,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:03,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792387062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:03,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:16:03,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-03 02:16:03,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931058381] [2022-11-03 02:16:03,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:03,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:03,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:03,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:03,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:16:03,533 INFO L87 Difference]: Start difference. First operand 351 states and 1096 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 02:16:03,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:03,675 INFO L93 Difference]: Finished difference Result 350 states and 1095 transitions. [2022-11-03 02:16:03,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:03,676 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 02:16:03,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:03,679 INFO L225 Difference]: With dead ends: 350 [2022-11-03 02:16:03,680 INFO L226 Difference]: Without dead ends: 350 [2022-11-03 02:16:03,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:16:03,681 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:03,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:16:03,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-03 02:16:03,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 346. [2022-11-03 02:16:03,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 325 states have (on average 3.3446153846153845) internal successors, (1087), 345 states have internal predecessors, (1087), 0 states have call successors, (0), 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 02:16:03,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1087 transitions. [2022-11-03 02:16:03,701 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1087 transitions. Word has length 6 [2022-11-03 02:16:03,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:03,702 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 1087 transitions. [2022-11-03 02:16:03,702 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 02:16:03,702 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1087 transitions. [2022-11-03 02:16:03,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 02:16:03,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:03,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 02:16:03,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:03,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:03,919 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:03,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:03,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1031141227, now seen corresponding path program 1 times [2022-11-03 02:16:03,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:03,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602337098] [2022-11-03 02:16:03,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:03,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:04,157 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 02:16:04,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:04,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602337098] [2022-11-03 02:16:04,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602337098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:04,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:04,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:16:04,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973472643] [2022-11-03 02:16:04,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:04,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:16:04,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:04,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:16:04,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:16:04,160 INFO L87 Difference]: Start difference. First operand 346 states and 1087 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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 02:16:04,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:04,535 INFO L93 Difference]: Finished difference Result 1004 states and 2983 transitions. [2022-11-03 02:16:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:16:04,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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 02:16:04,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:04,544 INFO L225 Difference]: With dead ends: 1004 [2022-11-03 02:16:04,544 INFO L226 Difference]: Without dead ends: 1004 [2022-11-03 02:16:04,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:16:04,545 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 153 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:04,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 10 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:16:04,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2022-11-03 02:16:04,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 573. [2022-11-03 02:16:04,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 552 states have (on average 3.253623188405797) internal successors, (1796), 572 states have internal predecessors, (1796), 0 states have call successors, (0), 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 02:16:04,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 1796 transitions. [2022-11-03 02:16:04,580 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 1796 transitions. Word has length 6 [2022-11-03 02:16:04,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:04,580 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 1796 transitions. [2022-11-03 02:16:04,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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 02:16:04,580 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 1796 transitions. [2022-11-03 02:16:04,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:16:04,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:04,581 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1] [2022-11-03 02:16:04,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:16:04,582 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:04,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:04,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1934445122, now seen corresponding path program 1 times [2022-11-03 02:16:04,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:04,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749628417] [2022-11-03 02:16:04,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:04,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:04,736 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 02:16:04,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:04,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749628417] [2022-11-03 02:16:04,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749628417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:04,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936950666] [2022-11-03 02:16:04,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:04,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:04,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:04,743 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:04,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:16:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:04,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:16:04,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:04,963 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 02:16:04,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:16:05,042 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 02:16:05,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936950666] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:16:05,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [580277171] [2022-11-03 02:16:05,043 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 02:16:05,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:16:05,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-03 02:16:05,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156230946] [2022-11-03 02:16:05,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:16:05,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:16:05,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:05,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:16:05,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:16:05,049 INFO L87 Difference]: Start difference. First operand 573 states and 1796 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 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 02:16:06,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:06,191 INFO L93 Difference]: Finished difference Result 6043 states and 19080 transitions. [2022-11-03 02:16:06,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:16:06,192 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 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 02:16:06,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:06,245 INFO L225 Difference]: With dead ends: 6043 [2022-11-03 02:16:06,245 INFO L226 Difference]: Without dead ends: 6043 [2022-11-03 02:16:06,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:16:06,247 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 594 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:06,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 24 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 02:16:06,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6043 states. [2022-11-03 02:16:06,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6043 to 603. [2022-11-03 02:16:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 582 states have (on average 3.2302405498281788) internal successors, (1880), 602 states have internal predecessors, (1880), 0 states have call successors, (0), 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 02:16:06,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1880 transitions. [2022-11-03 02:16:06,357 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1880 transitions. Word has length 7 [2022-11-03 02:16:06,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:06,357 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 1880 transitions. [2022-11-03 02:16:06,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 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 02:16:06,358 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1880 transitions. [2022-11-03 02:16:06,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:16:06,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:06,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:06,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:06,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 02:16:06,587 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:06,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:06,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1933353456, now seen corresponding path program 1 times [2022-11-03 02:16:06,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:06,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620500242] [2022-11-03 02:16:06,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:06,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:06,753 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 02:16:06,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:06,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620500242] [2022-11-03 02:16:06,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620500242] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:06,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790276506] [2022-11-03 02:16:06,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:06,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:06,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:06,756 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:06,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:16:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:06,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:16:06,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:06,961 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 02:16:06,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:06,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790276506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:06,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:16:06,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-03 02:16:06,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773863559] [2022-11-03 02:16:06,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:06,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:16:06,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:06,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:16:06,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:16:06,964 INFO L87 Difference]: Start difference. First operand 603 states and 1880 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:16:07,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:07,165 INFO L93 Difference]: Finished difference Result 936 states and 2959 transitions. [2022-11-03 02:16:07,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:16:07,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 02:16:07,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:07,173 INFO L225 Difference]: With dead ends: 936 [2022-11-03 02:16:07,173 INFO L226 Difference]: Without dead ends: 936 [2022-11-03 02:16:07,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 02:16:07,175 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 65 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:07,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 6 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:16:07,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2022-11-03 02:16:07,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 602. [2022-11-03 02:16:07,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 582 states have (on average 3.2285223367697595) internal successors, (1879), 601 states have internal predecessors, (1879), 0 states have call successors, (0), 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 02:16:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1879 transitions. [2022-11-03 02:16:07,208 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1879 transitions. Word has length 7 [2022-11-03 02:16:07,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:07,209 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 1879 transitions. [2022-11-03 02:16:07,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:16:07,209 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1879 transitions. [2022-11-03 02:16:07,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:16:07,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:07,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:07,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:07,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:07,436 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:07,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:07,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1933353454, now seen corresponding path program 1 times [2022-11-03 02:16:07,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:07,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466628975] [2022-11-03 02:16:07,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:07,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:07,559 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 02:16:07,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:07,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466628975] [2022-11-03 02:16:07,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466628975] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:07,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873235629] [2022-11-03 02:16:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:07,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:07,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:07,562 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:07,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:16:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:07,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:16:07,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:07,778 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 02:16:07,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:16:07,796 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 02:16:07,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873235629] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:16:07,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [641794476] [2022-11-03 02:16:07,798 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 02:16:07,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:16:07,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-03 02:16:07,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940164696] [2022-11-03 02:16:07,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:16:07,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:16:07,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:07,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:16:07,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:16:07,801 INFO L87 Difference]: Start difference. First operand 602 states and 1879 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 02:16:08,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:08,214 INFO L93 Difference]: Finished difference Result 1941 states and 6205 transitions. [2022-11-03 02:16:08,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:16:08,214 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 02:16:08,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:08,231 INFO L225 Difference]: With dead ends: 1941 [2022-11-03 02:16:08,232 INFO L226 Difference]: Without dead ends: 1941 [2022-11-03 02:16:08,232 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 02:16:08,233 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 160 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:08,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 12 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:16:08,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2022-11-03 02:16:08,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 605. [2022-11-03 02:16:08,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 585 states have (on average 3.2222222222222223) internal successors, (1885), 604 states have internal predecessors, (1885), 0 states have call successors, (0), 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 02:16:08,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 1885 transitions. [2022-11-03 02:16:08,279 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 1885 transitions. Word has length 7 [2022-11-03 02:16:08,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:08,279 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 1885 transitions. [2022-11-03 02:16:08,279 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 02:16:08,280 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 1885 transitions. [2022-11-03 02:16:08,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:16:08,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:08,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:08,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:08,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:08,507 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:08,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:08,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1900519925, now seen corresponding path program 1 times [2022-11-03 02:16:08,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:08,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688535512] [2022-11-03 02:16:08,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:08,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:08,598 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 02:16:08,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:08,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688535512] [2022-11-03 02:16:08,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688535512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:08,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:08,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:16:08,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040340598] [2022-11-03 02:16:08,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:08,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:08,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:08,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:08,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:08,601 INFO L87 Difference]: Start difference. First operand 605 states and 1885 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 02:16:08,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:08,763 INFO L93 Difference]: Finished difference Result 1164 states and 3642 transitions. [2022-11-03 02:16:08,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:08,764 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 02:16:08,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:08,773 INFO L225 Difference]: With dead ends: 1164 [2022-11-03 02:16:08,774 INFO L226 Difference]: Without dead ends: 1164 [2022-11-03 02:16:08,774 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 02:16:08,775 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 27 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:08,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 4 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:16:08,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-11-03 02:16:08,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 629. [2022-11-03 02:16:08,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 609 states have (on average 3.1773399014778323) internal successors, (1935), 628 states have internal predecessors, (1935), 0 states have call successors, (0), 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 02:16:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1935 transitions. [2022-11-03 02:16:08,811 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1935 transitions. Word has length 7 [2022-11-03 02:16:08,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:08,811 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 1935 transitions. [2022-11-03 02:16:08,812 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 02:16:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1935 transitions. [2022-11-03 02:16:08,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:16:08,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:08,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:08,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:16:08,813 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:08,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:08,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1213223876, now seen corresponding path program 1 times [2022-11-03 02:16:08,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:08,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959027229] [2022-11-03 02:16:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:08,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:08,907 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 02:16:08,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:08,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959027229] [2022-11-03 02:16:08,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959027229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:08,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:08,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:16:08,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736565679] [2022-11-03 02:16:08,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:08,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:08,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:08,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:08,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:08,913 INFO L87 Difference]: Start difference. First operand 629 states and 1935 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 02:16:09,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:09,048 INFO L93 Difference]: Finished difference Result 733 states and 2223 transitions. [2022-11-03 02:16:09,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:09,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 02:16:09,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:09,053 INFO L225 Difference]: With dead ends: 733 [2022-11-03 02:16:09,053 INFO L226 Difference]: Without dead ends: 697 [2022-11-03 02:16:09,053 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 02:16:09,054 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 26 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:09,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:16:09,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-11-03 02:16:09,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 687. [2022-11-03 02:16:09,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 667 states have (on average 3.1724137931034484) internal successors, (2116), 686 states have internal predecessors, (2116), 0 states have call successors, (0), 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 02:16:09,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 2116 transitions. [2022-11-03 02:16:09,083 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 2116 transitions. Word has length 8 [2022-11-03 02:16:09,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:09,083 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 2116 transitions. [2022-11-03 02:16:09,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 02:16:09,084 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 2116 transitions. [2022-11-03 02:16:09,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:16:09,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:09,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:09,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:16:09,086 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:09,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:09,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1213223881, now seen corresponding path program 1 times [2022-11-03 02:16:09,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:09,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802592204] [2022-11-03 02:16:09,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:09,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:09,236 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 02:16:09,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:09,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802592204] [2022-11-03 02:16:09,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802592204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:09,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:09,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:16:09,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311080049] [2022-11-03 02:16:09,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:09,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:09,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:09,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:09,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:09,240 INFO L87 Difference]: Start difference. First operand 687 states and 2116 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 02:16:09,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:09,360 INFO L93 Difference]: Finished difference Result 663 states and 2032 transitions. [2022-11-03 02:16:09,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:09,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 02:16:09,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:09,365 INFO L225 Difference]: With dead ends: 663 [2022-11-03 02:16:09,365 INFO L226 Difference]: Without dead ends: 663 [2022-11-03 02:16:09,365 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 02:16:09,366 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 22 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:09,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:16:09,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-11-03 02:16:09,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 663. [2022-11-03 02:16:09,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 643 states have (on average 3.160186625194401) internal successors, (2032), 662 states have internal predecessors, (2032), 0 states have call successors, (0), 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 02:16:09,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 2032 transitions. [2022-11-03 02:16:09,402 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 2032 transitions. Word has length 8 [2022-11-03 02:16:09,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:09,402 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 2032 transitions. [2022-11-03 02:16:09,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 02:16:09,403 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 2032 transitions. [2022-11-03 02:16:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 02:16:09,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:09,409 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:09,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:16:09,409 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:09,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:09,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1038447034, now seen corresponding path program 1 times [2022-11-03 02:16:09,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:09,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759065655] [2022-11-03 02:16:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:09,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:09,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:09,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:09,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759065655] [2022-11-03 02:16:09,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759065655] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:09,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161079277] [2022-11-03 02:16:09,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:09,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:09,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:09,533 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:09,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:16:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:09,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:16:09,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:09,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:16:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:09,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161079277] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:16:09,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2079941110] [2022-11-03 02:16:09,813 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 02:16:09,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:16:09,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-03 02:16:09,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593511598] [2022-11-03 02:16:09,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:16:09,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:16:09,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:09,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:16:09,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:16:09,816 INFO L87 Difference]: Start difference. First operand 663 states and 2032 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 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 02:16:10,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:10,207 INFO L93 Difference]: Finished difference Result 3011 states and 9464 transitions. [2022-11-03 02:16:10,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:16:10,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 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 02:16:10,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:10,224 INFO L225 Difference]: With dead ends: 3011 [2022-11-03 02:16:10,225 INFO L226 Difference]: Without dead ends: 3011 [2022-11-03 02:16:10,225 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 02:16:10,226 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 165 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:10,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 12 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:16:10,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2022-11-03 02:16:10,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 735. [2022-11-03 02:16:10,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 715 states have (on average 3.144055944055944) internal successors, (2248), 734 states have internal predecessors, (2248), 0 states have call successors, (0), 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 02:16:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 2248 transitions. [2022-11-03 02:16:10,286 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 2248 transitions. Word has length 9 [2022-11-03 02:16:10,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:10,287 INFO L495 AbstractCegarLoop]: Abstraction has 735 states and 2248 transitions. [2022-11-03 02:16:10,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 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 02:16:10,287 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 2248 transitions. [2022-11-03 02:16:10,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 02:16:10,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:10,288 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:10,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:10,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 02:16:10,511 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:10,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:10,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1038447033, now seen corresponding path program 1 times [2022-11-03 02:16:10,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:10,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121957174] [2022-11-03 02:16:10,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:10,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:10,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:10,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121957174] [2022-11-03 02:16:10,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121957174] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:10,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358817854] [2022-11-03 02:16:10,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:10,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:10,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:10,622 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:10,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:16:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:10,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:16:10,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:10,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:10,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358817854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:10,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:16:10,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-03 02:16:10,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122592721] [2022-11-03 02:16:10,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:10,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:16:10,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:10,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:16:10,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:16:10,922 INFO L87 Difference]: Start difference. First operand 735 states and 2248 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:16:11,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:11,097 INFO L93 Difference]: Finished difference Result 1303 states and 3964 transitions. [2022-11-03 02:16:11,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:16:11,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 02:16:11,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:11,104 INFO L225 Difference]: With dead ends: 1303 [2022-11-03 02:16:11,105 INFO L226 Difference]: Without dead ends: 1303 [2022-11-03 02:16:11,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:16:11,106 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 56 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:11,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:16:11,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2022-11-03 02:16:11,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 734. [2022-11-03 02:16:11,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 715 states have (on average 3.020979020979021) internal successors, (2160), 733 states have internal predecessors, (2160), 0 states have call successors, (0), 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 02:16:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 2160 transitions. [2022-11-03 02:16:11,137 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 2160 transitions. Word has length 9 [2022-11-03 02:16:11,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:11,137 INFO L495 AbstractCegarLoop]: Abstraction has 734 states and 2160 transitions. [2022-11-03 02:16:11,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:16:11,138 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 2160 transitions. [2022-11-03 02:16:11,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 02:16:11,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:11,138 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:11,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:11,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 02:16:11,355 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:11,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:11,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1017964330, now seen corresponding path program 2 times [2022-11-03 02:16:11,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:11,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760254727] [2022-11-03 02:16:11,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:11,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:11,599 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 02:16:11,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:11,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760254727] [2022-11-03 02:16:11,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760254727] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:11,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158990834] [2022-11-03 02:16:11,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:16:11,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:11,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:11,602 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:11,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:16:11,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 02:16:11,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:16:11,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:16:11,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:11,855 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 02:16:11,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:11,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158990834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:11,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:16:11,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2022-11-03 02:16:11,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100166035] [2022-11-03 02:16:11,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:11,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:16:11,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:11,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:16:11,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:16:11,858 INFO L87 Difference]: Start difference. First operand 734 states and 2160 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:16:11,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:11,963 INFO L93 Difference]: Finished difference Result 733 states and 2159 transitions. [2022-11-03 02:16:11,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:16:11,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 02:16:11,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:11,968 INFO L225 Difference]: With dead ends: 733 [2022-11-03 02:16:11,968 INFO L226 Difference]: Without dead ends: 733 [2022-11-03 02:16:11,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:16:11,972 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 68 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:11,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 2 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:16:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-03 02:16:11,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 729. [2022-11-03 02:16:11,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 711 states have (on average 3.0253164556962027) internal successors, (2151), 728 states have internal predecessors, (2151), 0 states have call successors, (0), 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 02:16:11,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 2151 transitions. [2022-11-03 02:16:11,998 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 2151 transitions. Word has length 10 [2022-11-03 02:16:11,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:11,998 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 2151 transitions. [2022-11-03 02:16:11,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:16:11,998 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 2151 transitions. [2022-11-03 02:16:11,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:16:11,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:11,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:12,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:12,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-03 02:16:12,219 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:12,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:12,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1011751385, now seen corresponding path program 1 times [2022-11-03 02:16:12,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:12,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232895686] [2022-11-03 02:16:12,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:12,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:12,376 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 02:16:12,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:12,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232895686] [2022-11-03 02:16:12,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232895686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:12,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:12,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:12,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956779252] [2022-11-03 02:16:12,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:12,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:16:12,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:12,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:16:12,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:16:12,379 INFO L87 Difference]: Start difference. First operand 729 states and 2151 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:16:12,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:12,549 INFO L93 Difference]: Finished difference Result 925 states and 2556 transitions. [2022-11-03 02:16:12,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:16:12,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 02:16:12,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:12,555 INFO L225 Difference]: With dead ends: 925 [2022-11-03 02:16:12,555 INFO L226 Difference]: Without dead ends: 889 [2022-11-03 02:16:12,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:16:12,556 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:12,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 6 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:16:12,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-11-03 02:16:12,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 825. [2022-11-03 02:16:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 807 states have (on average 2.919454770755886) internal successors, (2356), 824 states have internal predecessors, (2356), 0 states have call successors, (0), 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 02:16:12,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 2356 transitions. [2022-11-03 02:16:12,622 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 2356 transitions. Word has length 11 [2022-11-03 02:16:12,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:12,622 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 2356 transitions. [2022-11-03 02:16:12,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:16:12,623 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 2356 transitions. [2022-11-03 02:16:12,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 02:16:12,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:12,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:12,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 02:16:12,625 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:12,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:12,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1663885327, now seen corresponding path program 1 times [2022-11-03 02:16:12,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:12,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075514571] [2022-11-03 02:16:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:12,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:12,881 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 02:16:12,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:12,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075514571] [2022-11-03 02:16:12,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075514571] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:12,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972231907] [2022-11-03 02:16:12,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:12,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:12,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:12,884 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:12,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 02:16:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:13,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:16:13,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:13,142 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 02:16:13,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:13,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972231907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:13,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:16:13,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-03 02:16:13,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509826427] [2022-11-03 02:16:13,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:13,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:16:13,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:13,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:16:13,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:16:13,144 INFO L87 Difference]: Start difference. First operand 825 states and 2356 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 02:16:13,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:13,352 INFO L93 Difference]: Finished difference Result 1096 states and 2915 transitions. [2022-11-03 02:16:13,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:16:13,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 12 [2022-11-03 02:16:13,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:13,357 INFO L225 Difference]: With dead ends: 1096 [2022-11-03 02:16:13,357 INFO L226 Difference]: Without dead ends: 1024 [2022-11-03 02:16:13,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:16:13,358 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 43 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:13,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 7 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:16:13,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2022-11-03 02:16:13,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 825. [2022-11-03 02:16:13,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 807 states have (on average 2.919454770755886) internal successors, (2356), 824 states have internal predecessors, (2356), 0 states have call successors, (0), 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 02:16:13,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 2356 transitions. [2022-11-03 02:16:13,389 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 2356 transitions. Word has length 12 [2022-11-03 02:16:13,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:13,389 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 2356 transitions. [2022-11-03 02:16:13,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 02:16:13,390 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 2356 transitions. [2022-11-03 02:16:13,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:16:13,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:13,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:13,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:13,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 02:16:13,614 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:13,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:13,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1344112606, now seen corresponding path program 1 times [2022-11-03 02:16:13,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:13,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850198668] [2022-11-03 02:16:13,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:13,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:16:13,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:13,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850198668] [2022-11-03 02:16:13,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850198668] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:13,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870005958] [2022-11-03 02:16:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:13,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:13,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:13,842 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:13,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 02:16:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:14,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:16:14,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:16:14,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:16:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:16:14,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870005958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:16:14,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [751296265] [2022-11-03 02:16:14,165 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 02:16:14,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:16:14,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 2, 2] total 7 [2022-11-03 02:16:14,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695267103] [2022-11-03 02:16:14,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:16:14,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:16:14,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:14,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:16:14,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:16:14,168 INFO L87 Difference]: Start difference. First operand 825 states and 2356 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 02:16:14,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:14,598 INFO L93 Difference]: Finished difference Result 1150 states and 3165 transitions. [2022-11-03 02:16:14,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:16:14,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 02:16:14,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:14,603 INFO L225 Difference]: With dead ends: 1150 [2022-11-03 02:16:14,603 INFO L226 Difference]: Without dead ends: 1046 [2022-11-03 02:16:14,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:16:14,604 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 169 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:14,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 0 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:16:14,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-11-03 02:16:14,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 557. [2022-11-03 02:16:14,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 550 states have (on average 2.710909090909091) internal successors, (1491), 556 states have internal predecessors, (1491), 0 states have call successors, (0), 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 02:16:14,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 1491 transitions. [2022-11-03 02:16:14,629 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 1491 transitions. Word has length 13 [2022-11-03 02:16:14,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:14,630 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 1491 transitions. [2022-11-03 02:16:14,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 02:16:14,631 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 1491 transitions. [2022-11-03 02:16:14,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:16:14,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:14,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:14,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:14,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 02:16:14,849 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:14,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:14,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1344112608, now seen corresponding path program 1 times [2022-11-03 02:16:14,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:14,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021235267] [2022-11-03 02:16:14,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:14,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:15,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:16:15,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:15,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021235267] [2022-11-03 02:16:15,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021235267] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:15,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564396114] [2022-11-03 02:16:15,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:15,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:15,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:15,056 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:15,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 02:16:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:15,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:16:15,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:16:15,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:16:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:16:15,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564396114] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:16:15,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [522348430] [2022-11-03 02:16:15,455 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 02:16:15,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:16:15,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 10 [2022-11-03 02:16:15,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460118314] [2022-11-03 02:16:15,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:16:15,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:16:15,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:15,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:16:15,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:16:15,459 INFO L87 Difference]: Start difference. First operand 557 states and 1491 transitions. Second operand has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 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 02:16:16,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:16,053 INFO L93 Difference]: Finished difference Result 1528 states and 4169 transitions. [2022-11-03 02:16:16,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:16:16,054 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 02:16:16,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:16,058 INFO L225 Difference]: With dead ends: 1528 [2022-11-03 02:16:16,059 INFO L226 Difference]: Without dead ends: 1072 [2022-11-03 02:16:16,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:16:16,060 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 244 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:16,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 0 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:16:16,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2022-11-03 02:16:16,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 853. [2022-11-03 02:16:16,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 846 states have (on average 2.92080378250591) internal successors, (2471), 852 states have internal predecessors, (2471), 0 states have call successors, (0), 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 02:16:16,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2471 transitions. [2022-11-03 02:16:16,095 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2471 transitions. Word has length 13 [2022-11-03 02:16:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:16,095 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 2471 transitions. [2022-11-03 02:16:16,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 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 02:16:16,096 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2471 transitions. [2022-11-03 02:16:16,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:16:16,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:16,097 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1] [2022-11-03 02:16:16,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:16,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:16,319 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:16,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:16,319 INFO L85 PathProgramCache]: Analyzing trace with hash -769100898, now seen corresponding path program 2 times [2022-11-03 02:16:16,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:16,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007399695] [2022-11-03 02:16:16,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:16,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:16,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:16,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007399695] [2022-11-03 02:16:16,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007399695] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:16,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935566748] [2022-11-03 02:16:16,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:16:16,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:16,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:16,676 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:16,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 02:16:16,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 02:16:16,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:16:16,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:16:16,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:16,964 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:16:16,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:16,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935566748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:16,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:16:16,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2022-11-03 02:16:16,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128764499] [2022-11-03 02:16:16,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:16,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:16:16,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:16,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:16:16,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:16:16,966 INFO L87 Difference]: Start difference. First operand 853 states and 2471 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:16:17,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:17,082 INFO L93 Difference]: Finished difference Result 852 states and 2469 transitions. [2022-11-03 02:16:17,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:16:17,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 02:16:17,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:17,087 INFO L225 Difference]: With dead ends: 852 [2022-11-03 02:16:17,087 INFO L226 Difference]: Without dead ends: 852 [2022-11-03 02:16:17,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:16:17,088 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 32 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:17,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 4 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:16:17,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-11-03 02:16:17,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 834. [2022-11-03 02:16:17,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 828 states have (on average 2.9384057971014492) internal successors, (2433), 833 states have internal predecessors, (2433), 0 states have call successors, (0), 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 02:16:17,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 2433 transitions. [2022-11-03 02:16:17,115 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 2433 transitions. Word has length 13 [2022-11-03 02:16:17,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:17,115 INFO L495 AbstractCegarLoop]: Abstraction has 834 states and 2433 transitions. [2022-11-03 02:16:17,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:16:17,116 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 2433 transitions. [2022-11-03 02:16:17,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:16:17,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:17,117 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:17,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:17,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:17,331 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:17,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:17,331 INFO L85 PathProgramCache]: Analyzing trace with hash 21092850, now seen corresponding path program 1 times [2022-11-03 02:16:17,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:17,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204758107] [2022-11-03 02:16:17,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:17,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:16:17,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:17,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204758107] [2022-11-03 02:16:17,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204758107] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:17,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119845453] [2022-11-03 02:16:17,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:17,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:17,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:17,491 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:17,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 02:16:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:17,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:16:17,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:16:17,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:17,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119845453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:17,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:16:17,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-03 02:16:17,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327338084] [2022-11-03 02:16:17,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:17,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:16:17,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:17,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:16:17,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:16:17,806 INFO L87 Difference]: Start difference. First operand 834 states and 2433 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:16:17,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:17,941 INFO L93 Difference]: Finished difference Result 920 states and 2698 transitions. [2022-11-03 02:16:17,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:16:17,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 02:16:17,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:17,946 INFO L225 Difference]: With dead ends: 920 [2022-11-03 02:16:17,946 INFO L226 Difference]: Without dead ends: 920 [2022-11-03 02:16:17,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 02:16:17,948 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:17,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:16:17,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-11-03 02:16:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 770. [2022-11-03 02:16:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 765 states have (on average 2.8797385620915033) internal successors, (2203), 769 states have internal predecessors, (2203), 0 states have call successors, (0), 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 02:16:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 2203 transitions. [2022-11-03 02:16:17,975 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 2203 transitions. Word has length 14 [2022-11-03 02:16:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:17,977 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 2203 transitions. [2022-11-03 02:16:17,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:16:17,977 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 2203 transitions. [2022-11-03 02:16:17,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:16:17,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:17,978 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:18,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:18,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-03 02:16:18,202 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:18,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:18,202 INFO L85 PathProgramCache]: Analyzing trace with hash 21092852, now seen corresponding path program 1 times [2022-11-03 02:16:18,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:18,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410800549] [2022-11-03 02:16:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:18,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:18,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:16:18,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:18,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410800549] [2022-11-03 02:16:18,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410800549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:18,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:18,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:16:18,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748082459] [2022-11-03 02:16:18,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:18,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:18,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:18,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:18,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:18,310 INFO L87 Difference]: Start difference. First operand 770 states and 2203 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:16:18,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:18,408 INFO L93 Difference]: Finished difference Result 672 states and 1860 transitions. [2022-11-03 02:16:18,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:18,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 02:16:18,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:18,411 INFO L225 Difference]: With dead ends: 672 [2022-11-03 02:16:18,411 INFO L226 Difference]: Without dead ends: 672 [2022-11-03 02:16:18,414 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 02:16:18,415 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 11 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:18,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:16:18,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-11-03 02:16:18,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 652. [2022-11-03 02:16:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 648 states have (on average 2.7839506172839505) internal successors, (1804), 651 states have internal predecessors, (1804), 0 states have call successors, (0), 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 02:16:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1804 transitions. [2022-11-03 02:16:18,433 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1804 transitions. Word has length 14 [2022-11-03 02:16:18,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:18,433 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 1804 transitions. [2022-11-03 02:16:18,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:16:18,434 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1804 transitions. [2022-11-03 02:16:18,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:16:18,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:18,435 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2022-11-03 02:16:18,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 02:16:18,436 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:18,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:18,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1875239869, now seen corresponding path program 1 times [2022-11-03 02:16:18,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:18,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988137451] [2022-11-03 02:16:18,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:18,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:18,786 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:18,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:18,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988137451] [2022-11-03 02:16:18,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988137451] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:18,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723699158] [2022-11-03 02:16:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:18,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:18,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:18,791 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:18,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 02:16:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:19,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:16:19,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:19,069 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:19,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:16:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:19,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723699158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:16:19,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [803896603] [2022-11-03 02:16:19,357 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 02:16:19,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:16:19,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-11-03 02:16:19,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127945273] [2022-11-03 02:16:19,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:16:19,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 02:16:19,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:19,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 02:16:19,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-03 02:16:19,359 INFO L87 Difference]: Start difference. First operand 652 states and 1804 transitions. Second operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 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 02:16:21,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:21,081 INFO L93 Difference]: Finished difference Result 10483 states and 31470 transitions. [2022-11-03 02:16:21,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 02:16:21,082 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 02:16:21,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:21,138 INFO L225 Difference]: With dead ends: 10483 [2022-11-03 02:16:21,138 INFO L226 Difference]: Without dead ends: 10483 [2022-11-03 02:16:21,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-03 02:16:21,139 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1262 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:21,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 54 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 02:16:21,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10483 states. [2022-11-03 02:16:21,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10483 to 880. [2022-11-03 02:16:21,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 876 states have (on average 2.6210045662100456) internal successors, (2296), 879 states have internal predecessors, (2296), 0 states have call successors, (0), 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 02:16:21,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2296 transitions. [2022-11-03 02:16:21,354 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2296 transitions. Word has length 14 [2022-11-03 02:16:21,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:21,354 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 2296 transitions. [2022-11-03 02:16:21,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 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 02:16:21,355 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2296 transitions. [2022-11-03 02:16:21,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:16:21,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:21,356 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:21,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:21,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-03 02:16:21,583 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:21,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:21,583 INFO L85 PathProgramCache]: Analyzing trace with hash -37155209, now seen corresponding path program 2 times [2022-11-03 02:16:21,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:21,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061496741] [2022-11-03 02:16:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:21,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:21,790 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:21,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:21,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061496741] [2022-11-03 02:16:21,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061496741] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:21,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446977567] [2022-11-03 02:16:21,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:16:21,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:21,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:21,794 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:21,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 02:16:22,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 02:16:22,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:16:22,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:16:22,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:16:22,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:16:22,174 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:16:22,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446977567] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:16:22,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [866171972] [2022-11-03 02:16:22,176 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 02:16:22,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:16:22,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2022-11-03 02:16:22,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184150928] [2022-11-03 02:16:22,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:16:22,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:16:22,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:22,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:16:22,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:16:22,180 INFO L87 Difference]: Start difference. First operand 880 states and 2296 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 02:16:22,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:22,567 INFO L93 Difference]: Finished difference Result 3443 states and 10118 transitions. [2022-11-03 02:16:22,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:16:22,567 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 15 [2022-11-03 02:16:22,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:22,583 INFO L225 Difference]: With dead ends: 3443 [2022-11-03 02:16:22,584 INFO L226 Difference]: Without dead ends: 3443 [2022-11-03 02:16:22,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:16:22,585 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 288 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:22,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 14 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:16:22,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3443 states. [2022-11-03 02:16:22,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3443 to 591. [2022-11-03 02:16:22,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 588 states have (on average 2.79421768707483) internal successors, (1643), 590 states have internal predecessors, (1643), 0 states have call successors, (0), 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 02:16:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1643 transitions. [2022-11-03 02:16:22,652 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1643 transitions. Word has length 15 [2022-11-03 02:16:22,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:22,653 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 1643 transitions. [2022-11-03 02:16:22,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 02:16:22,654 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1643 transitions. [2022-11-03 02:16:22,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:16:22,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:22,655 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:22,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:22,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:22,875 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:22,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:22,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1320837072, now seen corresponding path program 2 times [2022-11-03 02:16:22,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:22,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179704445] [2022-11-03 02:16:22,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:22,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:16:23,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:23,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179704445] [2022-11-03 02:16:23,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179704445] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:23,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266381129] [2022-11-03 02:16:23,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:16:23,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:23,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:23,064 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:23,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-03 02:16:23,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 02:16:23,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:16:23,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:16:23,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:16:23,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:16:23,934 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:16:23,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266381129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:16:23,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [905979895] [2022-11-03 02:16:23,936 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 02:16:23,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:16:23,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 15 [2022-11-03 02:16:23,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197862102] [2022-11-03 02:16:23,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:16:23,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 02:16:23,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:23,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 02:16:23,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:16:23,940 INFO L87 Difference]: Start difference. First operand 591 states and 1643 transitions. Second operand has 17 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 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 02:16:24,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:24,649 INFO L93 Difference]: Finished difference Result 1703 states and 4997 transitions. [2022-11-03 02:16:24,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 02:16:24,651 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 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 17 [2022-11-03 02:16:24,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:24,653 INFO L225 Difference]: With dead ends: 1703 [2022-11-03 02:16:24,653 INFO L226 Difference]: Without dead ends: 263 [2022-11-03 02:16:24,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=284, Invalid=708, Unknown=0, NotChecked=0, Total=992 [2022-11-03 02:16:24,654 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 456 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:24,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 0 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:16:24,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-11-03 02:16:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 78. [2022-11-03 02:16:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 2.0) internal successors, (152), 77 states have internal predecessors, (152), 0 states have call successors, (0), 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 02:16:24,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 152 transitions. [2022-11-03 02:16:24,659 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 152 transitions. Word has length 17 [2022-11-03 02:16:24,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:24,660 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 152 transitions. [2022-11-03 02:16:24,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 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 02:16:24,660 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 152 transitions. [2022-11-03 02:16:24,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:16:24,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:24,661 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1] [2022-11-03 02:16:24,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:24,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-03 02:16:24,868 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:24,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:24,869 INFO L85 PathProgramCache]: Analyzing trace with hash 711966723, now seen corresponding path program 2 times [2022-11-03 02:16:24,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:24,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85525693] [2022-11-03 02:16:24,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:24,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:25,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:25,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85525693] [2022-11-03 02:16:25,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85525693] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:25,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266737612] [2022-11-03 02:16:25,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:16:25,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:25,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:25,772 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:25,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-03 02:16:26,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 02:16:26,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:16:26,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:16:26,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:26,136 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-03 02:16:26,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:26,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266737612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:26,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:16:26,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [24] total 26 [2022-11-03 02:16:26,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338956113] [2022-11-03 02:16:26,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:26,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:16:26,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:26,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:16:26,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:16:26,138 INFO L87 Difference]: Start difference. First operand 78 states and 152 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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 02:16:26,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:26,201 INFO L93 Difference]: Finished difference Result 78 states and 151 transitions. [2022-11-03 02:16:26,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:16:26,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 26 [2022-11-03 02:16:26,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:26,203 INFO L225 Difference]: With dead ends: 78 [2022-11-03 02:16:26,203 INFO L226 Difference]: Without dead ends: 78 [2022-11-03 02:16:26,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=308, Invalid=448, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:16:26,204 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:26,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:16:26,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-03 02:16:26,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 33. [2022-11-03 02:16:26,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.9375) internal successors, (62), 32 states have internal predecessors, (62), 0 states have call successors, (0), 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 02:16:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 62 transitions. [2022-11-03 02:16:26,207 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 62 transitions. Word has length 26 [2022-11-03 02:16:26,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:26,208 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 62 transitions. [2022-11-03 02:16:26,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 02:16:26,208 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 62 transitions. [2022-11-03 02:16:26,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:16:26,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:26,209 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:26,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:26,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-03 02:16:26,423 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:26,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:26,423 INFO L85 PathProgramCache]: Analyzing trace with hash 995721434, now seen corresponding path program 1 times [2022-11-03 02:16:26,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:26,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304562449] [2022-11-03 02:16:26,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:26,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:27,349 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:27,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:27,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304562449] [2022-11-03 02:16:27,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304562449] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:27,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416295385] [2022-11-03 02:16:27,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:27,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:27,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:27,351 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:27,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-03 02:16:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:27,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 02:16:27,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:27,863 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:27,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:16:28,818 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:28,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416295385] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:16:28,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [67262204] [2022-11-03 02:16:28,819 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 02:16:28,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:16:28,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2022-11-03 02:16:28,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945519620] [2022-11-03 02:16:28,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:16:28,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-03 02:16:28,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:28,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-03 02:16:28,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-03 02:16:28,823 INFO L87 Difference]: Start difference. First operand 33 states and 62 transitions. Second operand has 49 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 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 02:16:31,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:31,077 INFO L93 Difference]: Finished difference Result 378 states and 660 transitions. [2022-11-03 02:16:31,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-03 02:16:31,078 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 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 29 [2022-11-03 02:16:31,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:31,079 INFO L225 Difference]: With dead ends: 378 [2022-11-03 02:16:31,079 INFO L226 Difference]: Without dead ends: 378 [2022-11-03 02:16:31,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-03 02:16:31,081 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 604 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:31,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 0 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1216 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-03 02:16:31,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-03 02:16:31,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 57. [2022-11-03 02:16:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.9642857142857142) internal successors, (110), 56 states have internal predecessors, (110), 0 states have call successors, (0), 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 02:16:31,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 110 transitions. [2022-11-03 02:16:31,086 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 110 transitions. Word has length 29 [2022-11-03 02:16:31,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:31,086 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 110 transitions. [2022-11-03 02:16:31,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 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 02:16:31,086 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 110 transitions. [2022-11-03 02:16:31,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 02:16:31,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:31,088 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:31,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:31,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-03 02:16:31,301 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-03 02:16:31,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:31,301 INFO L85 PathProgramCache]: Analyzing trace with hash 2133224666, now seen corresponding path program 2 times [2022-11-03 02:16:31,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:31,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941541907] [2022-11-03 02:16:31,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:31,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:16:34,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:34,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941541907] [2022-11-03 02:16:34,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941541907] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:34,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495312821] [2022-11-03 02:16:34,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:16:34,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:34,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:34,471 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:34,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-03 02:16:34,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 02:16:34,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:16:34,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:16:34,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:35,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2022-11-03 02:16:35,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:35,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495312821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:35,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:16:35,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [48] total 50 [2022-11-03 02:16:35,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99493563] [2022-11-03 02:16:35,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:35,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:16:35,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:35,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:16:35,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1180, Invalid=1370, Unknown=0, NotChecked=0, Total=2550 [2022-11-03 02:16:35,007 INFO L87 Difference]: Start difference. First operand 57 states and 110 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) 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 02:16:35,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:35,073 INFO L93 Difference]: Finished difference Result 57 states and 110 transitions. [2022-11-03 02:16:35,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:16:35,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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 53 [2022-11-03 02:16:35,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:35,074 INFO L225 Difference]: With dead ends: 57 [2022-11-03 02:16:35,074 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 02:16:35,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1184, Invalid=1468, Unknown=0, NotChecked=0, Total=2652 [2022-11-03 02:16:35,076 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:35,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:16:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 02:16:35,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 02:16:35,077 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 02:16:35,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 02:16:35,077 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2022-11-03 02:16:35,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:35,078 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 02:16:35,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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 02:16:35,078 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 02:16:35,078 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 02:16:35,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2022-11-03 02:16:35,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-11-03 02:16:35,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-11-03 02:16:35,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-11-03 02:16:35,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-11-03 02:16:35,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-11-03 02:16:35,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-11-03 02:16:35,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-11-03 02:16:35,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-11-03 02:16:35,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-11-03 02:16:35,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-11-03 02:16:35,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-11-03 02:16:35,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-11-03 02:16:35,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-11-03 02:16:35,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-11-03 02:16:35,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-11-03 02:16:35,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-11-03 02:16:35,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-11-03 02:16:35,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 39 remaining) [2022-11-03 02:16:35,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 39 remaining) [2022-11-03 02:16:35,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 39 remaining) [2022-11-03 02:16:35,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2022-11-03 02:16:35,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2022-11-03 02:16:35,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-11-03 02:16:35,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 39 remaining) [2022-11-03 02:16:35,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 39 remaining) [2022-11-03 02:16:35,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 39 remaining) [2022-11-03 02:16:35,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-11-03 02:16:35,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-11-03 02:16:35,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-11-03 02:16:35,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-11-03 02:16:35,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-11-03 02:16:35,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-11-03 02:16:35,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-11-03 02:16:35,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-11-03 02:16:35,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-11-03 02:16:35,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-11-03 02:16:35,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-11-03 02:16:35,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-11-03 02:16:35,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:35,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-03 02:16:35,317 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:35,324 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-03 02:16:35,324 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:16:35,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:16:35 BasicIcfg [2022-11-03 02:16:35,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:16:35,328 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:16:35,328 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:16:35,328 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:16:35,329 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:15:31" (3/4) ... [2022-11-03 02:16:35,332 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 02:16:35,338 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-03 02:16:35,339 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-03 02:16:35,339 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-03 02:16:35,348 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2022-11-03 02:16:35,349 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-03 02:16:35,350 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 02:16:35,351 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 02:16:35,435 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:16:35,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:16:35,441 INFO L158 Benchmark]: Toolchain (without parser) took 65944.41ms. Allocated memory was 117.4MB in the beginning and 394.3MB in the end (delta: 276.8MB). Free memory was 79.5MB in the beginning and 206.8MB in the end (delta: -127.3MB). Peak memory consumption was 147.5MB. Max. memory is 16.1GB. [2022-11-03 02:16:35,442 INFO L158 Benchmark]: CDTParser took 0.59ms. Allocated memory is still 117.4MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:16:35,442 INFO L158 Benchmark]: CACSL2BoogieTranslator took 569.69ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 90.0MB in the end (delta: -10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:16:35,443 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.31ms. Allocated memory is still 117.4MB. Free memory was 90.0MB in the beginning and 86.4MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:16:35,443 INFO L158 Benchmark]: Boogie Preprocessor took 88.28ms. Allocated memory is still 117.4MB. Free memory was 86.4MB in the beginning and 84.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:16:35,443 INFO L158 Benchmark]: RCFGBuilder took 1658.49ms. Allocated memory is still 117.4MB. Free memory was 83.7MB in the beginning and 58.0MB in the end (delta: 25.7MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2022-11-03 02:16:35,444 INFO L158 Benchmark]: TraceAbstraction took 63398.26ms. Allocated memory was 117.4MB in the beginning and 394.3MB in the end (delta: 276.8MB). Free memory was 57.4MB in the beginning and 212.0MB in the end (delta: -154.6MB). Peak memory consumption was 124.4MB. Max. memory is 16.1GB. [2022-11-03 02:16:35,444 INFO L158 Benchmark]: Witness Printer took 112.79ms. Allocated memory is still 394.3MB. Free memory was 212.0MB in the beginning and 206.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 02:16:35,446 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59ms. Allocated memory is still 117.4MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 569.69ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 90.0MB in the end (delta: -10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.31ms. Allocated memory is still 117.4MB. Free memory was 90.0MB in the beginning and 86.4MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 88.28ms. Allocated memory is still 117.4MB. Free memory was 86.4MB in the beginning and 84.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1658.49ms. Allocated memory is still 117.4MB. Free memory was 83.7MB in the beginning and 58.0MB in the end (delta: 25.7MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. * TraceAbstraction took 63398.26ms. Allocated memory was 117.4MB in the beginning and 394.3MB in the end (delta: 276.8MB). Free memory was 57.4MB in the beginning and 212.0MB in the end (delta: -154.6MB). Peak memory consumption was 124.4MB. Max. memory is 16.1GB. * Witness Printer took 112.79ms. Allocated memory is still 394.3MB. Free memory was 212.0MB in the beginning and 206.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.6s, 422 PlacesBefore, 63 PlacesAfterwards, 449 TransitionsBefore, 63 TransitionsAfterwards, 7238 CoEnabledTransitionPairs, 8 FixpointIterations, 317 TrivialSequentialCompositions, 90 ConcurrentSequentialCompositions, 63 TrivialYvCompositions, 33 ConcurrentYvCompositions, 27 ChoiceCompositions, 530 TotalNumberOfCompositions, 9915 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8339, positive: 8259, positive conditional: 0, positive unconditional: 8259, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5014, positive: 4990, positive conditional: 0, positive unconditional: 4990, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5014, positive: 4975, positive conditional: 0, positive unconditional: 4975, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 39, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 230, positive: 77, positive conditional: 0, positive unconditional: 77, negative: 154, negative conditional: 0, negative unconditional: 154, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8339, positive: 3269, positive conditional: 0, positive unconditional: 3269, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 5014, unknown conditional: 0, unknown unconditional: 5014] , Statistics on independence cache: Total cache size (in pairs): 183, Positive cache size: 174, Positive conditional cache size: 0, Positive unconditional cache size: 174, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - 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: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 149]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 149]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 149]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 149]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 149]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 149]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 149]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 149]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 126]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 126]: 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, 504 locations, 39 error locations. Started 1 CEGAR loops. OverallTime: 63.1s, OverallIterations: 28, TraceHistogramMax: 46, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 12.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 27.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4876 SdHoareTripleChecker+Valid, 9.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4876 mSDsluCounter, 190 SdHoareTripleChecker+Invalid, 8.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2546 mSDsCounter, 2132 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4648 IncrementalHoareTripleChecker+Invalid, 6780 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2132 mSolverCounterUnsat, 45 mSDtfsCounter, 4648 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 614 GetRequests, 306 SyntacticMatches, 4 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=880occurred in iteration=23, InterpolantAutomatonStates: 222, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 28 MinimizatonAttempts, 27057 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 618 NumberOfCodeBlocks, 520 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 688 ConstructedInterpolants, 0 QuantifiedInterpolants, 2114 SizeOfPredicates, 29 NumberOfNonLiveVariables, 5827 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 57 InterpolantComputations, 18 PerfectInterpolantSequences, 1498/3924 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 24 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-03 02:16:35,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02d0d31-8de3-4467-8cae-a5c2ef211b81/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE