./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0 --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 a8373cb8fe582bc9cb45d9609c89b33bf31b030c114c7e7fdfee851d52974fb9 --- 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-e04fb08 [2022-11-16 20:08:35,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:08:35,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:08:35,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:08:35,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:08:35,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:08:35,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:08:35,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:08:35,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:08:35,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:08:35,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:08:35,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:08:35,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:08:35,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:08:35,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:08:35,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:08:35,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:08:35,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:08:35,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:08:35,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:08:35,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:08:35,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:08:35,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:08:35,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:08:35,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:08:35,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:08:35,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:08:35,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:08:35,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:08:35,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:08:35,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:08:35,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:08:35,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:08:35,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:08:35,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:08:35,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:08:35,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:08:35,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:08:35,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:08:35,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:08:35,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:08:35,831 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-16 20:08:35,870 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:08:35,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:08:35,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:08:35,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:08:35,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:08:35,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:08:35,871 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:08:35,872 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:08:35,872 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:08:35,872 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:08:35,872 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:08:35,872 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:08:35,872 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:08:35,873 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:08:35,873 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:08:35,873 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:08:35,873 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:08:35,873 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:08:35,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:08:35,874 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:08:35,874 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 20:08:35,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:08:35,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:08:35,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:08:35,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:08:35,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:08:35,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:08:35,876 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 20:08:35,876 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:08:35,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:08:35,876 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:08:35,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:08:35,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:08:35,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:08:35,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:08:35,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:08:35,878 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:08:35,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:08:35,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:08:35,878 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:08:35,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:08:35,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:08:35,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:08:35,879 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_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8373cb8fe582bc9cb45d9609c89b33bf31b030c114c7e7fdfee851d52974fb9 [2022-11-16 20:08:36,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:08:36,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:08:36,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:08:36,184 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:08:36,185 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:08:36,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c [2022-11-16 20:08:36,260 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/data/a12325612/59de292d78fa4bd681af38e2c5bca7b9/FLAGeef567159 [2022-11-16 20:08:36,759 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:08:36,759 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c [2022-11-16 20:08:36,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/data/a12325612/59de292d78fa4bd681af38e2c5bca7b9/FLAGeef567159 [2022-11-16 20:08:37,101 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/data/a12325612/59de292d78fa4bd681af38e2c5bca7b9 [2022-11-16 20:08:37,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:08:37,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:08:37,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:08:37,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:08:37,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:08:37,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:08:37" (1/1) ... [2022-11-16 20:08:37,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20ddfb69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:37, skipping insertion in model container [2022-11-16 20:08:37,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:08:37" (1/1) ... [2022-11-16 20:08:37,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:08:37,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:08:37,441 WARN L229 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_6dc2ec31-6606-4e55-9d47-120a5acec3f4/sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c[44494,44507] [2022-11-16 20:08:37,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:08:37,464 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:08:37,515 WARN L229 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_6dc2ec31-6606-4e55-9d47-120a5acec3f4/sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c[44494,44507] [2022-11-16 20:08:37,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:08:37,531 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:08:37,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:37 WrapperNode [2022-11-16 20:08:37,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:08:37,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:08:37,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:08:37,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:08:37,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:37" (1/1) ... [2022-11-16 20:08:37,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:37" (1/1) ... [2022-11-16 20:08:37,621 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 527 [2022-11-16 20:08:37,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:08:37,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:08:37,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:08:37,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:08:37,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:37" (1/1) ... [2022-11-16 20:08:37,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:37" (1/1) ... [2022-11-16 20:08:37,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:37" (1/1) ... [2022-11-16 20:08:37,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:37" (1/1) ... [2022-11-16 20:08:37,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:37" (1/1) ... [2022-11-16 20:08:37,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:37" (1/1) ... [2022-11-16 20:08:37,683 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:37" (1/1) ... [2022-11-16 20:08:37,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:37" (1/1) ... [2022-11-16 20:08:37,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:08:37,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:08:37,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:08:37,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:08:37,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:37" (1/1) ... [2022-11-16 20:08:37,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:08:37,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:08:37,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:08:37,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:08:37,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:08:37,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:08:37,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:08:37,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:08:37,879 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:08:37,881 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:08:37,896 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-16 20:08:38,648 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-11-16 20:08:38,648 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-11-16 20:08:38,649 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:08:38,831 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:08:38,832 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 20:08:38,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:08:38 BoogieIcfgContainer [2022-11-16 20:08:38,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:08:38,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:08:38,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:08:38,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:08:38,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:08:37" (1/3) ... [2022-11-16 20:08:38,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1ad242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:08:38, skipping insertion in model container [2022-11-16 20:08:38,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:37" (2/3) ... [2022-11-16 20:08:38,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1ad242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:08:38, skipping insertion in model container [2022-11-16 20:08:38,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:08:38" (3/3) ... [2022-11-16 20:08:38,845 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_3a.BV.c.cil.c [2022-11-16 20:08:38,864 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:08:38,864 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 20:08:38,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:08:38,951 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;@6502fd1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:08:38,952 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-16 20:08:38,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 110 states have (on average 1.8) internal successors, (198), 118 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:38,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 20:08:38,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:38,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:08:38,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:08:38,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:38,974 INFO L85 PathProgramCache]: Analyzing trace with hash -796644391, now seen corresponding path program 1 times [2022-11-16 20:08:38,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:38,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436730450] [2022-11-16 20:08:38,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:38,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:39,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:08:39,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:39,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436730450] [2022-11-16 20:08:39,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436730450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:08:39,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:08:39,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:08:39,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544591697] [2022-11-16 20:08:39,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:08:39,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:08:39,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:39,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:08:39,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:39,442 INFO L87 Difference]: Start difference. First operand has 119 states, 110 states have (on average 1.8) internal successors, (198), 118 states have internal predecessors, (198), 0 states have call successors, (0), 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, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:39,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:39,800 INFO L93 Difference]: Finished difference Result 257 states and 428 transitions. [2022-11-16 20:08:39,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:08:39,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 20:08:39,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:39,815 INFO L225 Difference]: With dead ends: 257 [2022-11-16 20:08:39,815 INFO L226 Difference]: Without dead ends: 134 [2022-11-16 20:08:39,820 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 [2022-11-16 20:08:39,828 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 27 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:39,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 260 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 20:08:39,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-16 20:08:39,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2022-11-16 20:08:39,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 124 states have (on average 1.5161290322580645) internal successors, (188), 131 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:39,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 188 transitions. [2022-11-16 20:08:39,896 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 188 transitions. Word has length 10 [2022-11-16 20:08:39,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:39,897 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 188 transitions. [2022-11-16 20:08:39,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:39,898 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 188 transitions. [2022-11-16 20:08:39,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 20:08:39,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:39,899 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:08:39,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:08:39,900 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:08:39,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:39,901 INFO L85 PathProgramCache]: Analyzing trace with hash 761731770, now seen corresponding path program 1 times [2022-11-16 20:08:39,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:39,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444989767] [2022-11-16 20:08:39,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:39,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:40,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:08:40,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:40,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444989767] [2022-11-16 20:08:40,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444989767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:08:40,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:08:40,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:08:40,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706417297] [2022-11-16 20:08:40,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:08:40,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:08:40,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:40,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:08:40,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:40,014 INFO L87 Difference]: Start difference. First operand 132 states and 188 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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) [2022-11-16 20:08:40,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:40,266 INFO L93 Difference]: Finished difference Result 313 states and 463 transitions. [2022-11-16 20:08:40,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:08:40,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 24 [2022-11-16 20:08:40,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:40,268 INFO L225 Difference]: With dead ends: 313 [2022-11-16 20:08:40,269 INFO L226 Difference]: Without dead ends: 171 [2022-11-16 20:08:40,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:40,271 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 67 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:40,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 166 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:08:40,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-16 20:08:40,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 168. [2022-11-16 20:08:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 160 states have (on average 1.48125) internal successors, (237), 167 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:40,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 237 transitions. [2022-11-16 20:08:40,283 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 237 transitions. Word has length 24 [2022-11-16 20:08:40,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:40,284 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 237 transitions. [2022-11-16 20:08:40,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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) [2022-11-16 20:08:40,284 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 237 transitions. [2022-11-16 20:08:40,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 20:08:40,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:40,285 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:08:40,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:08:40,286 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:08:40,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:40,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1769537699, now seen corresponding path program 1 times [2022-11-16 20:08:40,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:40,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865960849] [2022-11-16 20:08:40,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:40,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:08:40,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:40,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865960849] [2022-11-16 20:08:40,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865960849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:08:40,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:08:40,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:08:40,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032134005] [2022-11-16 20:08:40,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:08:40,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:08:40,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:40,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:08:40,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:40,346 INFO L87 Difference]: Start difference. First operand 168 states and 237 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:40,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:40,590 INFO L93 Difference]: Finished difference Result 405 states and 591 transitions. [2022-11-16 20:08:40,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:08:40,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2022-11-16 20:08:40,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:40,595 INFO L225 Difference]: With dead ends: 405 [2022-11-16 20:08:40,595 INFO L226 Difference]: Without dead ends: 229 [2022-11-16 20:08:40,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:40,606 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 123 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:40,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 119 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:08:40,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-16 20:08:40,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 216. [2022-11-16 20:08:40,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 208 states have (on average 1.4615384615384615) internal successors, (304), 215 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:40,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 304 transitions. [2022-11-16 20:08:40,629 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 304 transitions. Word has length 27 [2022-11-16 20:08:40,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:40,629 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 304 transitions. [2022-11-16 20:08:40,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:40,630 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 304 transitions. [2022-11-16 20:08:40,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 20:08:40,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:40,632 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:08:40,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 20:08:40,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:08:40,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:40,635 INFO L85 PathProgramCache]: Analyzing trace with hash 353442979, now seen corresponding path program 1 times [2022-11-16 20:08:40,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:40,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418699531] [2022-11-16 20:08:40,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:40,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 20:08:40,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:40,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418699531] [2022-11-16 20:08:40,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418699531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:08:40,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:08:40,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:08:40,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664851904] [2022-11-16 20:08:40,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:08:40,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:08:40,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:40,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:08:40,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:40,792 INFO L87 Difference]: Start difference. First operand 216 states and 304 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:41,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:41,016 INFO L93 Difference]: Finished difference Result 504 states and 732 transitions. [2022-11-16 20:08:41,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:08:41,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 41 [2022-11-16 20:08:41,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:41,025 INFO L225 Difference]: With dead ends: 504 [2022-11-16 20:08:41,025 INFO L226 Difference]: Without dead ends: 287 [2022-11-16 20:08:41,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:41,037 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 130 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:41,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 107 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:08:41,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-16 20:08:41,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 283. [2022-11-16 20:08:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 275 states have (on average 1.5054545454545454) internal successors, (414), 282 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:41,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 414 transitions. [2022-11-16 20:08:41,063 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 414 transitions. Word has length 41 [2022-11-16 20:08:41,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:41,064 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 414 transitions. [2022-11-16 20:08:41,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:41,064 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 414 transitions. [2022-11-16 20:08:41,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 20:08:41,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:41,071 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:08:41,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 20:08:41,071 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:08:41,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:41,072 INFO L85 PathProgramCache]: Analyzing trace with hash -93621843, now seen corresponding path program 1 times [2022-11-16 20:08:41,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:41,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930123470] [2022-11-16 20:08:41,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:41,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:41,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:41,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930123470] [2022-11-16 20:08:41,120 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 20:08:41,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94949099] [2022-11-16 20:08:41,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:41,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:08:41,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:08:41,127 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:08:41,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 20:08:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:41,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:08:41,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:08:41,420 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 20:08:41,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:08:41,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94949099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:08:41,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:08:41,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:08:41,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604230243] [2022-11-16 20:08:41,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:08:41,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:08:41,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:41,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:08:41,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:08:41,422 INFO L87 Difference]: Start difference. First operand 283 states and 414 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:41,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:41,664 INFO L93 Difference]: Finished difference Result 608 states and 892 transitions. [2022-11-16 20:08:41,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 20:08:41,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 66 [2022-11-16 20:08:41,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:41,671 INFO L225 Difference]: With dead ends: 608 [2022-11-16 20:08:41,671 INFO L226 Difference]: Without dead ends: 327 [2022-11-16 20:08:41,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:08:41,674 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 35 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:41,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 216 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:08:41,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-16 20:08:41,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 320. [2022-11-16 20:08:41,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 312 states have (on average 1.4583333333333333) internal successors, (455), 319 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:41,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 455 transitions. [2022-11-16 20:08:41,705 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 455 transitions. Word has length 66 [2022-11-16 20:08:41,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:41,708 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 455 transitions. [2022-11-16 20:08:41,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:41,709 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 455 transitions. [2022-11-16 20:08:41,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 20:08:41,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:41,712 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:08:41,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 20:08:41,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:08:41,918 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:08:41,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:41,918 INFO L85 PathProgramCache]: Analyzing trace with hash 371039937, now seen corresponding path program 1 times [2022-11-16 20:08:41,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:41,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615606980] [2022-11-16 20:08:41,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:41,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:42,055 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-16 20:08:42,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:42,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615606980] [2022-11-16 20:08:42,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615606980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:08:42,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:08:42,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:08:42,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143926365] [2022-11-16 20:08:42,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:08:42,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:08:42,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:42,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:08:42,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:42,058 INFO L87 Difference]: Start difference. First operand 320 states and 455 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:42,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:42,243 INFO L93 Difference]: Finished difference Result 654 states and 935 transitions. [2022-11-16 20:08:42,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:08:42,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 79 [2022-11-16 20:08:42,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:42,246 INFO L225 Difference]: With dead ends: 654 [2022-11-16 20:08:42,246 INFO L226 Difference]: Without dead ends: 335 [2022-11-16 20:08:42,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:42,247 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 134 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:42,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 103 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:08:42,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-16 20:08:42,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2022-11-16 20:08:42,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 323 states have (on average 1.4643962848297214) internal successors, (473), 330 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:42,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 473 transitions. [2022-11-16 20:08:42,260 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 473 transitions. Word has length 79 [2022-11-16 20:08:42,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:42,261 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 473 transitions. [2022-11-16 20:08:42,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:42,261 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 473 transitions. [2022-11-16 20:08:42,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-16 20:08:42,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:42,262 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:08:42,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 20:08:42,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:08:42,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:42,263 INFO L85 PathProgramCache]: Analyzing trace with hash -230604926, now seen corresponding path program 1 times [2022-11-16 20:08:42,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:42,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726524137] [2022-11-16 20:08:42,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:42,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:42,283 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:08:42,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405280987] [2022-11-16 20:08:42,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:42,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:08:42,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:08:42,287 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:08:42,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 20:08:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:42,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 20:08:42,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:08:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-16 20:08:42,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:08:42,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:42,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726524137] [2022-11-16 20:08:42,476 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:08:42,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405280987] [2022-11-16 20:08:42,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405280987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:08:42,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:08:42,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:08:42,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770132825] [2022-11-16 20:08:42,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:08:42,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:08:42,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:42,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:08:42,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:42,480 INFO L87 Difference]: Start difference. First operand 331 states and 473 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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) [2022-11-16 20:08:42,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:42,683 INFO L93 Difference]: Finished difference Result 709 states and 1020 transitions. [2022-11-16 20:08:42,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:08:42,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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) Word has length 85 [2022-11-16 20:08:42,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:42,687 INFO L225 Difference]: With dead ends: 709 [2022-11-16 20:08:42,687 INFO L226 Difference]: Without dead ends: 365 [2022-11-16 20:08:42,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:42,688 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 57 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:42,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 182 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:08:42,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-11-16 20:08:42,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 354. [2022-11-16 20:08:42,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 346 states have (on average 1.453757225433526) internal successors, (503), 353 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:42,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 503 transitions. [2022-11-16 20:08:42,705 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 503 transitions. Word has length 85 [2022-11-16 20:08:42,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:42,706 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 503 transitions. [2022-11-16 20:08:42,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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) [2022-11-16 20:08:42,707 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 503 transitions. [2022-11-16 20:08:42,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-16 20:08:42,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:42,710 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:08:42,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 20:08:42,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 20:08:42,916 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:08:42,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:42,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1836257969, now seen corresponding path program 1 times [2022-11-16 20:08:42,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:42,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92161691] [2022-11-16 20:08:42,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:42,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:42,951 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:08:42,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34191891] [2022-11-16 20:08:42,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:42,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:08:42,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:08:42,953 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:08:42,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 20:08:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:43,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 20:08:43,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:08:43,135 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-16 20:08:43,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:08:43,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:43,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92161691] [2022-11-16 20:08:43,136 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:08:43,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34191891] [2022-11-16 20:08:43,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34191891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:08:43,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:08:43,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:08:43,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314396375] [2022-11-16 20:08:43,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:08:43,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:08:43,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:43,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:08:43,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:43,139 INFO L87 Difference]: Start difference. First operand 354 states and 503 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:43,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:43,352 INFO L93 Difference]: Finished difference Result 707 states and 1005 transitions. [2022-11-16 20:08:43,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:08:43,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 104 [2022-11-16 20:08:43,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:43,354 INFO L225 Difference]: With dead ends: 707 [2022-11-16 20:08:43,354 INFO L226 Difference]: Without dead ends: 355 [2022-11-16 20:08:43,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:43,355 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 25 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:43,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 223 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:08:43,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-11-16 20:08:43,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 354. [2022-11-16 20:08:43,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 346 states have (on average 1.3959537572254335) internal successors, (483), 353 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:43,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 483 transitions. [2022-11-16 20:08:43,368 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 483 transitions. Word has length 104 [2022-11-16 20:08:43,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:43,369 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 483 transitions. [2022-11-16 20:08:43,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:43,369 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 483 transitions. [2022-11-16 20:08:43,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-16 20:08:43,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:43,376 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:08:43,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 20:08:43,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:08:43,581 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:08:43,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:43,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1756319792, now seen corresponding path program 1 times [2022-11-16 20:08:43,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:43,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333312434] [2022-11-16 20:08:43,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:43,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:43,604 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:08:43,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134408742] [2022-11-16 20:08:43,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:43,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:08:43,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:08:43,605 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:08:43,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 20:08:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:43,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 20:08:43,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:08:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-16 20:08:43,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:08:43,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:43,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333312434] [2022-11-16 20:08:43,779 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:08:43,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134408742] [2022-11-16 20:08:43,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134408742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:08:43,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:08:43,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:08:43,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82027322] [2022-11-16 20:08:43,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:08:43,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:08:43,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:43,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:08:43,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:43,781 INFO L87 Difference]: Start difference. First operand 354 states and 483 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:43,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:43,960 INFO L93 Difference]: Finished difference Result 752 states and 1036 transitions. [2022-11-16 20:08:43,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:08:43,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 109 [2022-11-16 20:08:43,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:43,962 INFO L225 Difference]: With dead ends: 752 [2022-11-16 20:08:43,962 INFO L226 Difference]: Without dead ends: 387 [2022-11-16 20:08:43,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:43,964 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 67 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:43,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 167 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:08:43,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-11-16 20:08:43,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 379. [2022-11-16 20:08:43,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 371 states have (on average 1.3935309973045822) internal successors, (517), 378 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:43,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 517 transitions. [2022-11-16 20:08:43,978 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 517 transitions. Word has length 109 [2022-11-16 20:08:43,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:43,979 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 517 transitions. [2022-11-16 20:08:43,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:43,979 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 517 transitions. [2022-11-16 20:08:43,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-16 20:08:43,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:43,981 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:08:43,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 20:08:44,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:08:44,187 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:08:44,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:44,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1566158878, now seen corresponding path program 1 times [2022-11-16 20:08:44,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:44,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918887810] [2022-11-16 20:08:44,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:44,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:44,313 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-16 20:08:44,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:44,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918887810] [2022-11-16 20:08:44,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918887810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:08:44,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:08:44,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:08:44,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113111672] [2022-11-16 20:08:44,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:08:44,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:08:44,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:44,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:08:44,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:44,316 INFO L87 Difference]: Start difference. First operand 379 states and 517 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:44,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:44,521 INFO L93 Difference]: Finished difference Result 795 states and 1091 transitions. [2022-11-16 20:08:44,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:08:44,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 113 [2022-11-16 20:08:44,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:44,524 INFO L225 Difference]: With dead ends: 795 [2022-11-16 20:08:44,524 INFO L226 Difference]: Without dead ends: 418 [2022-11-16 20:08:44,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:44,525 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 133 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:44,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 109 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:08:44,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-16 20:08:44,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 391. [2022-11-16 20:08:44,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 383 states have (on average 1.3890339425587468) internal successors, (532), 390 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:44,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 532 transitions. [2022-11-16 20:08:44,540 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 532 transitions. Word has length 113 [2022-11-16 20:08:44,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:44,540 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 532 transitions. [2022-11-16 20:08:44,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:44,541 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 532 transitions. [2022-11-16 20:08:44,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 20:08:44,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:44,542 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:08:44,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 20:08:44,543 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:08:44,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:44,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1480517754, now seen corresponding path program 1 times [2022-11-16 20:08:44,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:44,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290275768] [2022-11-16 20:08:44,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:44,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-16 20:08:44,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:44,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290275768] [2022-11-16 20:08:44,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290275768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:08:44,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:08:44,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:08:44,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419535080] [2022-11-16 20:08:44,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:08:44,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:08:44,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:44,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:08:44,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:44,627 INFO L87 Difference]: Start difference. First operand 391 states and 532 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:44,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:44,814 INFO L93 Difference]: Finished difference Result 810 states and 1102 transitions. [2022-11-16 20:08:44,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:08:44,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 124 [2022-11-16 20:08:44,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:44,817 INFO L225 Difference]: With dead ends: 810 [2022-11-16 20:08:44,817 INFO L226 Difference]: Without dead ends: 421 [2022-11-16 20:08:44,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:44,818 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 32 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:44,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 229 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:08:44,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-11-16 20:08:44,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 410. [2022-11-16 20:08:44,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 402 states have (on average 1.3781094527363185) internal successors, (554), 409 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:44,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 554 transitions. [2022-11-16 20:08:44,836 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 554 transitions. Word has length 124 [2022-11-16 20:08:44,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:44,837 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 554 transitions. [2022-11-16 20:08:44,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:44,837 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 554 transitions. [2022-11-16 20:08:44,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-16 20:08:44,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:44,839 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:08:44,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 20:08:44,839 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:08:44,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:44,840 INFO L85 PathProgramCache]: Analyzing trace with hash -867343103, now seen corresponding path program 1 times [2022-11-16 20:08:44,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:44,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209834310] [2022-11-16 20:08:44,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:44,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:44,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:44,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209834310] [2022-11-16 20:08:44,880 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 20:08:44,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664916281] [2022-11-16 20:08:44,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:44,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:08:44,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:08:44,882 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:08:44,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 20:08:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:45,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 20:08:45,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:08:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-16 20:08:45,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:08:45,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664916281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:08:45,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:08:45,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:08:45,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153975241] [2022-11-16 20:08:45,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:08:45,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:08:45,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:45,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:08:45,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:45,091 INFO L87 Difference]: Start difference. First operand 410 states and 554 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:45,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:45,306 INFO L93 Difference]: Finished difference Result 859 states and 1168 transitions. [2022-11-16 20:08:45,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:08:45,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 131 [2022-11-16 20:08:45,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:45,309 INFO L225 Difference]: With dead ends: 859 [2022-11-16 20:08:45,309 INFO L226 Difference]: Without dead ends: 440 [2022-11-16 20:08:45,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:08:45,310 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 64 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:45,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 171 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:08:45,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-16 20:08:45,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 437. [2022-11-16 20:08:45,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 429 states have (on average 1.3799533799533799) internal successors, (592), 436 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:45,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 592 transitions. [2022-11-16 20:08:45,328 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 592 transitions. Word has length 131 [2022-11-16 20:08:45,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:45,328 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 592 transitions. [2022-11-16 20:08:45,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:08:45,329 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 592 transitions. [2022-11-16 20:08:45,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-16 20:08:45,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:45,330 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:08:45,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 20:08:45,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 20:08:45,537 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:08:45,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:45,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1551459489, now seen corresponding path program 1 times [2022-11-16 20:08:45,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:45,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208588074] [2022-11-16 20:08:45,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:45,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 4 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-16 20:08:45,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:45,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208588074] [2022-11-16 20:08:45,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208588074] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:08:45,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153387219] [2022-11-16 20:08:45,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:45,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:08:45,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:08:45,651 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:08:45,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 20:08:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:45,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:08:45,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:08:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 4 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-16 20:08:45,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:08:45,883 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 4 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-16 20:08:45,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153387219] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:08:45,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1685523868] [2022-11-16 20:08:45,903 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-16 20:08:45,903 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:08:45,906 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:08:45,912 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:08:45,912 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:09:27,224 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:09:56,904 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15483#(and (= |ULTIMATE.start_ssl3_accept_~s__new_session~0#1| 1) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___6~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (not (= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~tmp___1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (= 12292 |ULTIMATE.start_ssl3_accept_~s__state~0#1|) (<= |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 1)) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~blastFlag~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__init_num~0#1| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___6~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (not (= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~s__server~0#1| 1) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__version~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___1~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (= 8192 |ULTIMATE.start_ssl3_accept_~s__type~0#1|) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___2~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (exists ((v_~bitwiseOr_4 Int)) (= (ite (or (= |ULTIMATE.start_ssl3_accept_~s__version~0#1| 1) (= |ULTIMATE.start_ssl3_accept_~s__version~0#1| 0)) 1 v_~bitwiseOr_4) 0)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___2~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__version~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647) (not (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1| 2147483646)))' at error location [2022-11-16 20:09:56,905 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:09:56,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:09:56,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-11-16 20:09:56,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331546178] [2022-11-16 20:09:56,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:09:56,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 20:09:56,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:09:56,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 20:09:56,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=488, Invalid=2374, Unknown=0, NotChecked=0, Total=2862 [2022-11-16 20:09:56,909 INFO L87 Difference]: Start difference. First operand 437 states and 592 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:09:57,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:09:57,632 INFO L93 Difference]: Finished difference Result 1507 states and 2020 transitions. [2022-11-16 20:09:57,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 20:09:57,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 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 137 [2022-11-16 20:09:57,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:09:57,637 INFO L225 Difference]: With dead ends: 1507 [2022-11-16 20:09:57,637 INFO L226 Difference]: Without dead ends: 1061 [2022-11-16 20:09:57,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 359 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 29.7s TimeCoverageRelationStatistics Valid=513, Invalid=2793, Unknown=0, NotChecked=0, Total=3306 [2022-11-16 20:09:57,640 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 631 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 20:09:57,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 346 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 20:09:57,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-11-16 20:09:57,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 600. [2022-11-16 20:09:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 594 states have (on average 1.4141414141414141) internal successors, (840), 599 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:09:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 840 transitions. [2022-11-16 20:09:57,667 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 840 transitions. Word has length 137 [2022-11-16 20:09:57,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:09:57,667 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 840 transitions. [2022-11-16 20:09:57,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:09:57,667 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 840 transitions. [2022-11-16 20:09:57,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-16 20:09:57,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:09:57,669 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:09:57,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 20:09:57,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 20:09:57,875 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:09:57,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:09:57,875 INFO L85 PathProgramCache]: Analyzing trace with hash -2055962146, now seen corresponding path program 1 times [2022-11-16 20:09:57,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:09:57,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501072963] [2022-11-16 20:09:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:57,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:09:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:09:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-16 20:09:58,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:09:58,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501072963] [2022-11-16 20:09:58,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501072963] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:09:58,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807234338] [2022-11-16 20:09:58,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:58,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:09:58,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:09:58,007 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:09:58,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 20:09:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:09:58,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:09:58,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:09:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-16 20:09:58,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:09:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-16 20:09:58,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807234338] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:09:58,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1609286941] [2022-11-16 20:09:58,245 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2022-11-16 20:09:58,245 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:09:58,247 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:09:58,247 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:09:58,247 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:10:34,831 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:11:04,921 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18844#(and (not (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483646)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___6~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (not (= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~tmp___1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 1)) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~blastFlag~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__init_num~0#1| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___6~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (not (= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~s__server~0#1| 1) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__version~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___1~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (= 8464 |ULTIMATE.start_ssl3_accept_~s__state~0#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (not (= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (= 8192 |ULTIMATE.start_ssl3_accept_~s__type~0#1|) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___2~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (exists ((v_~bitwiseOr_4 Int)) (= (ite (or (= |ULTIMATE.start_ssl3_accept_~s__version~0#1| 1) (= |ULTIMATE.start_ssl3_accept_~s__version~0#1| 0)) 1 v_~bitwiseOr_4) 0)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___2~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__version~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-11-16 20:11:04,921 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:11:04,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:11:04,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-11-16 20:11:04,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879171866] [2022-11-16 20:11:04,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:11:04,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 20:11:04,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:11:04,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 20:11:04,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=2490, Unknown=0, NotChecked=0, Total=2970 [2022-11-16 20:11:04,924 INFO L87 Difference]: Start difference. First operand 600 states and 840 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:05,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:11:05,835 INFO L93 Difference]: Finished difference Result 1953 states and 2650 transitions. [2022-11-16 20:11:05,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 20:11:05,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 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 140 [2022-11-16 20:11:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:11:05,844 INFO L225 Difference]: With dead ends: 1953 [2022-11-16 20:11:05,844 INFO L226 Difference]: Without dead ends: 1355 [2022-11-16 20:11:05,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 367 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1407 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=505, Invalid=2917, Unknown=0, NotChecked=0, Total=3422 [2022-11-16 20:11:05,849 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 667 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 20:11:05,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 560 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 20:11:05,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2022-11-16 20:11:05,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 774. [2022-11-16 20:11:05,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 768 states have (on average 1.3697916666666667) internal successors, (1052), 773 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:05,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1052 transitions. [2022-11-16 20:11:05,913 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1052 transitions. Word has length 140 [2022-11-16 20:11:05,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:05,913 INFO L495 AbstractCegarLoop]: Abstraction has 774 states and 1052 transitions. [2022-11-16 20:11:05,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:05,914 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1052 transitions. [2022-11-16 20:11:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 20:11:05,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:05,916 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:11:05,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 20:11:06,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 20:11:06,122 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:11:06,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:06,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1306265540, now seen corresponding path program 1 times [2022-11-16 20:11:06,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:06,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978633112] [2022-11-16 20:11:06,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:06,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:06,381 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 102 proven. 68 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 20:11:06,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:06,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978633112] [2022-11-16 20:11:06,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978633112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:11:06,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339911825] [2022-11-16 20:11:06,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:06,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:11:06,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:11:06,384 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:11:06,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 20:11:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:06,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:11:06,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:11:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 85 proven. 85 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 20:11:06,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:11:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 97 proven. 6 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-16 20:11:06,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339911825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:11:06,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1542430352] [2022-11-16 20:11:06,886 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-11-16 20:11:06,886 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:11:06,887 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:11:06,887 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:11:06,887 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:11:24,990 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:12:05,305 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22968#(and (not (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483646)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___6~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (not (= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~tmp___1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 1)) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~blastFlag~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__init_num~0#1| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___6~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (not (= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~s__server~0#1| 1) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__version~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___1~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (= 8464 |ULTIMATE.start_ssl3_accept_~s__state~0#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (not (= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (= 8192 |ULTIMATE.start_ssl3_accept_~s__type~0#1|) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___2~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (exists ((v_~bitwiseOr_4 Int)) (= (ite (or (= |ULTIMATE.start_ssl3_accept_~s__version~0#1| 1) (= |ULTIMATE.start_ssl3_accept_~s__version~0#1| 0)) 1 v_~bitwiseOr_4) 0)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___2~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__version~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-11-16 20:12:05,305 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:12:05,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:12:05,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 11 [2022-11-16 20:12:05,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498615789] [2022-11-16 20:12:05,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:12:05,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 20:12:05,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:05,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 20:12:05,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=598, Invalid=3434, Unknown=0, NotChecked=0, Total=4032 [2022-11-16 20:12:05,308 INFO L87 Difference]: Start difference. First operand 774 states and 1052 transitions. Second operand has 11 states, 11 states have (on average 21.727272727272727) internal successors, (239), 11 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:07,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:07,215 INFO L93 Difference]: Finished difference Result 3030 states and 4041 transitions. [2022-11-16 20:12:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 20:12:07,216 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.727272727272727) internal successors, (239), 11 states have internal predecessors, (239), 0 states have call successors, (0), 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 148 [2022-11-16 20:12:07,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:07,224 INFO L225 Difference]: With dead ends: 3030 [2022-11-16 20:12:07,224 INFO L226 Difference]: Without dead ends: 2258 [2022-11-16 20:12:07,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 388 SyntacticMatches, 11 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2908 ImplicationChecksByTransitivity, 40.7s TimeCoverageRelationStatistics Valid=780, Invalid=5540, Unknown=0, NotChecked=0, Total=6320 [2022-11-16 20:12:07,228 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1006 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:07,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 1310 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 20:12:07,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2022-11-16 20:12:07,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1702. [2022-11-16 20:12:07,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1696 states have (on average 1.317806603773585) internal successors, (2235), 1701 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:07,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2235 transitions. [2022-11-16 20:12:07,317 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2235 transitions. Word has length 148 [2022-11-16 20:12:07,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:07,317 INFO L495 AbstractCegarLoop]: Abstraction has 1702 states and 2235 transitions. [2022-11-16 20:12:07,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.727272727272727) internal successors, (239), 11 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:07,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2235 transitions. [2022-11-16 20:12:07,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-16 20:12:07,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:07,320 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:12:07,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 20:12:07,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:12:07,527 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:12:07,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:07,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2008078841, now seen corresponding path program 1 times [2022-11-16 20:12:07,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:07,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523346056] [2022-11-16 20:12:07,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:07,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:07,550 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:12:07,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442060798] [2022-11-16 20:12:07,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:07,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:12:07,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:12:07,553 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:12:07,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 20:12:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:07,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 20:12:07,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:12:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 125 proven. 131 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 20:12:08,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:12:08,448 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-16 20:12:08,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:08,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523346056] [2022-11-16 20:12:08,449 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:12:08,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442060798] [2022-11-16 20:12:08,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442060798] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 20:12:08,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 20:12:08,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-16 20:12:08,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195057224] [2022-11-16 20:12:08,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:08,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:12:08,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:08,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:12:08,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-16 20:12:08,450 INFO L87 Difference]: Start difference. First operand 1702 states and 2235 transitions. Second operand has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:09,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:09,130 INFO L93 Difference]: Finished difference Result 1946 states and 2528 transitions. [2022-11-16 20:12:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 20:12:09,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 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 172 [2022-11-16 20:12:09,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:09,137 INFO L225 Difference]: With dead ends: 1946 [2022-11-16 20:12:09,137 INFO L226 Difference]: Without dead ends: 1944 [2022-11-16 20:12:09,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-11-16 20:12:09,139 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 167 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:09,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 219 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 20:12:09,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2022-11-16 20:12:09,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1768. [2022-11-16 20:12:09,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1762 states have (on average 1.311577752553916) internal successors, (2311), 1767 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2311 transitions. [2022-11-16 20:12:09,243 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2311 transitions. Word has length 172 [2022-11-16 20:12:09,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:09,244 INFO L495 AbstractCegarLoop]: Abstraction has 1768 states and 2311 transitions. [2022-11-16 20:12:09,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:09,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2311 transitions. [2022-11-16 20:12:09,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-16 20:12:09,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:09,247 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:12:09,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 20:12:09,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 20:12:09,455 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:12:09,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:09,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2120902442, now seen corresponding path program 1 times [2022-11-16 20:12:09,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:09,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117963922] [2022-11-16 20:12:09,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:09,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:09,480 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:12:09,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501874613] [2022-11-16 20:12:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:09,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:12:09,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:12:09,482 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:12:09,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 20:12:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:09,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 20:12:09,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:12:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-11-16 20:12:09,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:12:09,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:09,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117963922] [2022-11-16 20:12:09,676 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:12:09,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501874613] [2022-11-16 20:12:09,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501874613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:09,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:09,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:12:09,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162150234] [2022-11-16 20:12:09,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:09,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:12:09,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:09,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:12:09,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:12:09,678 INFO L87 Difference]: Start difference. First operand 1768 states and 2311 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 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) [2022-11-16 20:12:10,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:10,061 INFO L93 Difference]: Finished difference Result 1768 states and 2311 transitions. [2022-11-16 20:12:10,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:12:10,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 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) Word has length 173 [2022-11-16 20:12:10,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:10,067 INFO L225 Difference]: With dead ends: 1768 [2022-11-16 20:12:10,068 INFO L226 Difference]: Without dead ends: 1767 [2022-11-16 20:12:10,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:12:10,069 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 58 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:10,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 274 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 20:12:10,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2022-11-16 20:12:10,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2022-11-16 20:12:10,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1762 states have (on average 1.308172531214529) internal successors, (2305), 1766 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2305 transitions. [2022-11-16 20:12:10,167 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2305 transitions. Word has length 173 [2022-11-16 20:12:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:10,168 INFO L495 AbstractCegarLoop]: Abstraction has 1767 states and 2305 transitions. [2022-11-16 20:12:10,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 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) [2022-11-16 20:12:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2305 transitions. [2022-11-16 20:12:10,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-16 20:12:10,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:10,171 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:12:10,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 20:12:10,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 20:12:10,379 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:12:10,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:10,379 INFO L85 PathProgramCache]: Analyzing trace with hash 704282563, now seen corresponding path program 1 times [2022-11-16 20:12:10,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:10,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978298020] [2022-11-16 20:12:10,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:10,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-16 20:12:10,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:10,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978298020] [2022-11-16 20:12:10,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978298020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:10,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:10,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:12:10,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43285043] [2022-11-16 20:12:10,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:10,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:12:10,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:10,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:12:10,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:12:10,477 INFO L87 Difference]: Start difference. First operand 1767 states and 2305 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:10,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:10,697 INFO L93 Difference]: Finished difference Result 3532 states and 4608 transitions. [2022-11-16 20:12:10,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:12:10,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 182 [2022-11-16 20:12:10,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:10,703 INFO L225 Difference]: With dead ends: 3532 [2022-11-16 20:12:10,703 INFO L226 Difference]: Without dead ends: 1767 [2022-11-16 20:12:10,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:12:10,706 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 41 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:10,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 187 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:12:10,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2022-11-16 20:12:10,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1761. [2022-11-16 20:12:10,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1761 states, 1756 states have (on average 1.2955580865603644) internal successors, (2275), 1760 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:10,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 2275 transitions. [2022-11-16 20:12:10,804 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 2275 transitions. Word has length 182 [2022-11-16 20:12:10,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:10,804 INFO L495 AbstractCegarLoop]: Abstraction has 1761 states and 2275 transitions. [2022-11-16 20:12:10,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:10,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 2275 transitions. [2022-11-16 20:12:10,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-16 20:12:10,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:10,808 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:12:10,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 20:12:10,808 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:12:10,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:10,808 INFO L85 PathProgramCache]: Analyzing trace with hash 614541731, now seen corresponding path program 1 times [2022-11-16 20:12:10,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:10,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922061494] [2022-11-16 20:12:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:10,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 46 proven. 201 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 20:12:11,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:11,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922061494] [2022-11-16 20:12:11,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922061494] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:12:11,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137749666] [2022-11-16 20:12:11,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:11,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:12:11,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:12:11,025 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:12:11,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 20:12:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:11,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 20:12:11,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:12:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 46 proven. 201 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 20:12:11,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:12:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 20:12:11,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137749666] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 20:12:11,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 20:12:11,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2022-11-16 20:12:11,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454678612] [2022-11-16 20:12:11,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:11,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 20:12:11,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:11,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 20:12:11,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 20:12:11,876 INFO L87 Difference]: Start difference. First operand 1761 states and 2275 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:12,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:12,114 INFO L93 Difference]: Finished difference Result 5042 states and 6460 transitions. [2022-11-16 20:12:12,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 20:12:12,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 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 185 [2022-11-16 20:12:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:12,125 INFO L225 Difference]: With dead ends: 5042 [2022-11-16 20:12:12,125 INFO L226 Difference]: Without dead ends: 3283 [2022-11-16 20:12:12,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 20:12:12,129 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 400 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:12,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 614 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:12:12,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2022-11-16 20:12:12,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 3225. [2022-11-16 20:12:12,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3225 states, 3220 states have (on average 1.2804347826086957) internal successors, (4123), 3224 states have internal predecessors, (4123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:12,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3225 states to 3225 states and 4123 transitions. [2022-11-16 20:12:12,329 INFO L78 Accepts]: Start accepts. Automaton has 3225 states and 4123 transitions. Word has length 185 [2022-11-16 20:12:12,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:12,329 INFO L495 AbstractCegarLoop]: Abstraction has 3225 states and 4123 transitions. [2022-11-16 20:12:12,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:12,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3225 states and 4123 transitions. [2022-11-16 20:12:12,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-16 20:12:12,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:12,333 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:12:12,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 20:12:12,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:12:12,539 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:12:12,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:12,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1058583005, now seen corresponding path program 1 times [2022-11-16 20:12:12,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:12,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052579086] [2022-11-16 20:12:12,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:12,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:12,562 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:12:12,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903214364] [2022-11-16 20:12:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:12,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:12:12,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:12:12,564 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:12:12,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 20:12:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:12,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 20:12:12,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:12:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 114 proven. 83 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-16 20:12:13,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:12:13,297 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 165 proven. 32 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-16 20:12:13,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:13,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052579086] [2022-11-16 20:12:13,297 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:12:13,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903214364] [2022-11-16 20:12:13,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903214364] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:12:13,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [778552408] [2022-11-16 20:12:13,306 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-16 20:12:13,307 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:12:13,307 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:12:13,307 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:12:13,307 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:13:01,236 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:13:46,902 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '56547#(and (not (<= |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1| 2147483646)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___6~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (not (= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~tmp___1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 1)) (<= |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__init_num~0#1| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___6~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (not (= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~s__server~0#1| 1) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__version~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___1~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (= 8464 |ULTIMATE.start_ssl3_accept_~s__state~0#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483648)) (not (= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~Time~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (= 8192 |ULTIMATE.start_ssl3_accept_~s__type~0#1|) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___2~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (exists ((v_~bitwiseOr_4 Int)) (= (ite (or (= |ULTIMATE.start_ssl3_accept_~s__version~0#1| 1) (= |ULTIMATE.start_ssl3_accept_~s__version~0#1| 0)) 1 v_~bitwiseOr_4) 0)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___2~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__version~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2022-11-16 20:13:46,903 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:13:46,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 20:13:46,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-11-16 20:13:46,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968035443] [2022-11-16 20:13:46,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 20:13:46,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 20:13:46,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:13:46,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 20:13:46,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=3695, Unknown=0, NotChecked=0, Total=4290 [2022-11-16 20:13:46,906 INFO L87 Difference]: Start difference. First operand 3225 states and 4123 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:47,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:13:47,547 INFO L93 Difference]: Finished difference Result 5878 states and 7476 transitions. [2022-11-16 20:13:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 20:13:47,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 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 189 [2022-11-16 20:13:47,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:13:47,555 INFO L225 Difference]: With dead ends: 5878 [2022-11-16 20:13:47,555 INFO L226 Difference]: Without dead ends: 2141 [2022-11-16 20:13:47,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 481 SyntacticMatches, 21 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2260 ImplicationChecksByTransitivity, 45.7s TimeCoverageRelationStatistics Valid=606, Invalid=3950, Unknown=0, NotChecked=0, Total=4556 [2022-11-16 20:13:47,561 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 163 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:13:47,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 584 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 20:13:47,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2022-11-16 20:13:47,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 2123. [2022-11-16 20:13:47,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2118 states have (on average 1.287063267233239) internal successors, (2726), 2122 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:47,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 2726 transitions. [2022-11-16 20:13:47,697 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 2726 transitions. Word has length 189 [2022-11-16 20:13:47,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:13:47,697 INFO L495 AbstractCegarLoop]: Abstraction has 2123 states and 2726 transitions. [2022-11-16 20:13:47,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:47,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 2726 transitions. [2022-11-16 20:13:47,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-16 20:13:47,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:13:47,699 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:13:47,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 20:13:47,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:13:47,920 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:13:47,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:13:47,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1802403154, now seen corresponding path program 1 times [2022-11-16 20:13:47,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:13:47,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977246661] [2022-11-16 20:13:47,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:13:47,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:13:47,943 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:13:47,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210935491] [2022-11-16 20:13:47,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:13:47,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:13:47,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:13:47,945 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:13:47,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 20:13:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:13:48,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:13:48,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:13:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-16 20:13:48,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:13:48,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:13:48,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977246661] [2022-11-16 20:13:48,131 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:13:48,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210935491] [2022-11-16 20:13:48,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210935491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:13:48,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:13:48,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:13:48,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880799636] [2022-11-16 20:13:48,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:13:48,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:13:48,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:13:48,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:13:48,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:13:48,135 INFO L87 Difference]: Start difference. First operand 2123 states and 2726 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:48,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:13:48,396 INFO L93 Difference]: Finished difference Result 4516 states and 5770 transitions. [2022-11-16 20:13:48,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:13:48,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 193 [2022-11-16 20:13:48,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:13:48,404 INFO L225 Difference]: With dead ends: 4516 [2022-11-16 20:13:48,404 INFO L226 Difference]: Without dead ends: 2395 [2022-11-16 20:13:48,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:13:48,408 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 8 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:13:48,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 211 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:13:48,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2022-11-16 20:13:48,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2379. [2022-11-16 20:13:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2379 states, 2374 states have (on average 1.266217354675653) internal successors, (3006), 2378 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:48,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 3006 transitions. [2022-11-16 20:13:48,549 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 3006 transitions. Word has length 193 [2022-11-16 20:13:48,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:13:48,549 INFO L495 AbstractCegarLoop]: Abstraction has 2379 states and 3006 transitions. [2022-11-16 20:13:48,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:48,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 3006 transitions. [2022-11-16 20:13:48,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-16 20:13:48,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:13:48,551 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:13:48,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 20:13:48,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-16 20:13:48,758 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:13:48,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:13:48,759 INFO L85 PathProgramCache]: Analyzing trace with hash 428970067, now seen corresponding path program 1 times [2022-11-16 20:13:48,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:13:48,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144476469] [2022-11-16 20:13:48,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:13:48,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:13:48,781 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:13:48,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483727561] [2022-11-16 20:13:48,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:13:48,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:13:48,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:13:48,783 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:13:48,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 20:13:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:13:48,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:13:48,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:13:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2022-11-16 20:13:49,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:13:49,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:13:49,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144476469] [2022-11-16 20:13:49,003 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:13:49,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483727561] [2022-11-16 20:13:49,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483727561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:13:49,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:13:49,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:13:49,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942848273] [2022-11-16 20:13:49,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:13:49,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:13:49,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:13:49,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:13:49,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:13:49,005 INFO L87 Difference]: Start difference. First operand 2379 states and 3006 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:49,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:13:49,239 INFO L93 Difference]: Finished difference Result 4780 states and 6050 transitions. [2022-11-16 20:13:49,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:13:49,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 223 [2022-11-16 20:13:49,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:13:49,250 INFO L225 Difference]: With dead ends: 4780 [2022-11-16 20:13:49,250 INFO L226 Difference]: Without dead ends: 2403 [2022-11-16 20:13:49,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:13:49,254 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 8 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:13:49,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 211 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:13:49,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2022-11-16 20:13:49,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 2391. [2022-11-16 20:13:49,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2391 states, 2386 states have (on average 1.2548197820620286) internal successors, (2994), 2390 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:49,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2391 states to 2391 states and 2994 transitions. [2022-11-16 20:13:49,381 INFO L78 Accepts]: Start accepts. Automaton has 2391 states and 2994 transitions. Word has length 223 [2022-11-16 20:13:49,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:13:49,382 INFO L495 AbstractCegarLoop]: Abstraction has 2391 states and 2994 transitions. [2022-11-16 20:13:49,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:49,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2391 states and 2994 transitions. [2022-11-16 20:13:49,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-11-16 20:13:49,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:13:49,384 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:13:49,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 20:13:49,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:13:49,590 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:13:49,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:13:49,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1027285213, now seen corresponding path program 1 times [2022-11-16 20:13:49,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:13:49,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688592112] [2022-11-16 20:13:49,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:13:49,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:13:49,638 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 20:13:49,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720980801] [2022-11-16 20:13:49,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:13:49,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:13:49,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:13:49,640 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:13:49,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 20:13:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:13:49,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 20:13:49,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:13:50,117 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2022-11-16 20:13:50,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:13:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2022-11-16 20:13:50,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:13:50,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688592112] [2022-11-16 20:13:50,457 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 20:13:50,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720980801] [2022-11-16 20:13:50,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720980801] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 20:13:50,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 20:13:50,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-16 20:13:50,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751813514] [2022-11-16 20:13:50,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:13:50,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:13:50,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:13:50,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:13:50,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 20:13:50,459 INFO L87 Difference]: Start difference. First operand 2391 states and 2994 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:50,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:13:50,602 INFO L93 Difference]: Finished difference Result 4227 states and 5344 transitions. [2022-11-16 20:13:50,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:13:50,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 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 254 [2022-11-16 20:13:50,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:13:50,612 INFO L225 Difference]: With dead ends: 4227 [2022-11-16 20:13:50,612 INFO L226 Difference]: Without dead ends: 3277 [2022-11-16 20:13:50,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 20:13:50,615 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 77 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:13:50,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 291 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:13:50,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2022-11-16 20:13:50,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 3260. [2022-11-16 20:13:50,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3260 states, 3255 states have (on average 1.2620583717357912) internal successors, (4108), 3259 states have internal predecessors, (4108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:50,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 4108 transitions. [2022-11-16 20:13:50,764 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 4108 transitions. Word has length 254 [2022-11-16 20:13:50,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:13:50,764 INFO L495 AbstractCegarLoop]: Abstraction has 3260 states and 4108 transitions. [2022-11-16 20:13:50,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:50,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 4108 transitions. [2022-11-16 20:13:50,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-16 20:13:50,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:13:50,767 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:13:50,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 20:13:50,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:13:50,974 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:13:50,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:13:50,974 INFO L85 PathProgramCache]: Analyzing trace with hash 606588893, now seen corresponding path program 1 times [2022-11-16 20:13:50,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:13:50,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874183888] [2022-11-16 20:13:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:13:50,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:13:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:13:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 341 proven. 56 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2022-11-16 20:13:51,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:13:51,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874183888] [2022-11-16 20:13:51,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874183888] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:13:51,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398864421] [2022-11-16 20:13:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:13:51,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:13:51,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:13:51,251 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:13:51,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 20:13:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:13:51,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:13:51,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:13:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2022-11-16 20:13:51,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:13:51,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398864421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:13:51,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 20:13:51,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 20:13:51,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104863108] [2022-11-16 20:13:51,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:13:51,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:13:51,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:13:51,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:13:51,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 20:13:51,446 INFO L87 Difference]: Start difference. First operand 3260 states and 4108 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:51,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:13:51,700 INFO L93 Difference]: Finished difference Result 5507 states and 6962 transitions. [2022-11-16 20:13:51,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:13:51,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 269 [2022-11-16 20:13:51,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:13:51,720 INFO L225 Difference]: With dead ends: 5507 [2022-11-16 20:13:51,727 INFO L226 Difference]: Without dead ends: 2249 [2022-11-16 20:13:51,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 20:13:51,731 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 35 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:13:51,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 211 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:13:51,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2022-11-16 20:13:51,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 1829. [2022-11-16 20:13:51,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1824 states have (on average 1.219298245614035) internal successors, (2224), 1828 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:51,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2224 transitions. [2022-11-16 20:13:51,841 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2224 transitions. Word has length 269 [2022-11-16 20:13:51,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:13:51,841 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 2224 transitions. [2022-11-16 20:13:51,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:13:51,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2224 transitions. [2022-11-16 20:13:51,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-11-16 20:13:51,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:13:51,844 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:13:51,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 20:13:52,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 20:13:52,051 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:13:52,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:13:52,052 INFO L85 PathProgramCache]: Analyzing trace with hash -2011757817, now seen corresponding path program 1 times [2022-11-16 20:13:52,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:13:52,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9797652] [2022-11-16 20:13:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:13:52,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:13:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:13:52,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 442 proven. 322 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2022-11-16 20:13:52,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:13:52,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9797652] [2022-11-16 20:13:52,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9797652] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:13:52,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969218231] [2022-11-16 20:13:52,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:13:52,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:13:52,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:13:52,439 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:13:52,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc2ec31-6606-4e55-9d47-120a5acec3f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 20:13:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:13:52,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 20:13:52,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:13:52,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 407 proven. 40 refuted. 0 times theorem prover too weak. 1206 trivial. 0 not checked. [2022-11-16 20:13:52,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:13:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 353 proven. 8 refuted. 0 times theorem prover too weak. 1292 trivial. 0 not checked. [2022-11-16 20:13:52,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969218231] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:13:52,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1649903744] [2022-11-16 20:13:52,814 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2022-11-16 20:13:52,814 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:13:52,814 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:13:52,815 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:13:52,815 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs