./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur --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 2c3b9571ba66fa4feec822ae5ad361f0264abe6d66c7b617817aa135932aee0a --- 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-38b53e6 [2022-11-25 23:55:42,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:55:42,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:55:42,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:55:42,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:55:42,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:55:42,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:55:42,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:55:42,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:55:42,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:55:42,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:55:42,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:55:42,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:55:42,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:55:42,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:55:42,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:55:42,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:55:42,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:55:42,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:55:42,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:55:42,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:55:42,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:55:42,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:55:42,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:55:42,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:55:42,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:55:42,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:55:42,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:55:42,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:55:42,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:55:42,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:55:42,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:55:42,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:55:42,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:55:42,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:55:42,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:55:42,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:55:42,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:55:42,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:55:42,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:55:42,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:55:42,176 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 23:55:42,205 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:55:42,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:55:42,206 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:55:42,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:55:42,208 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:55:42,208 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:55:42,208 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:55:42,209 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:55:42,209 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:55:42,209 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:55:42,210 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:55:42,210 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:55:42,211 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:55:42,211 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:55:42,211 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:55:42,212 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:55:42,212 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:55:42,212 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:55:42,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:55:42,214 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:55:42,214 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:55:42,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:55:42,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:55:42,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:55:42,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:55:42,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:55:42,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:55:42,222 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:55:42,224 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:55:42,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:55:42,224 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:55:42,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:55:42,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:55:42,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:55:42,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:55:42,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:55:42,228 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:55:42,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:55:42,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:55:42,229 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:55:42,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:55:42,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:55:42,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:55:42,231 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_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c3b9571ba66fa4feec822ae5ad361f0264abe6d66c7b617817aa135932aee0a [2022-11-25 23:55:42,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:55:42,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:55:42,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:55:42,706 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:55:42,707 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:55:42,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i [2022-11-25 23:55:46,000 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:55:46,235 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:55:46,235 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i [2022-11-25 23:55:46,243 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/data/aa5b16a97/186f667117004f819c150e9341ae88f4/FLAG4cf4ed062 [2022-11-25 23:55:46,263 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/data/aa5b16a97/186f667117004f819c150e9341ae88f4 [2022-11-25 23:55:46,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:55:46,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:55:46,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:55:46,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:55:46,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:55:46,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:55:46" (1/1) ... [2022-11-25 23:55:46,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fed0522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:46, skipping insertion in model container [2022-11-25 23:55:46,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:55:46" (1/1) ... [2022-11-25 23:55:46,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:55:46,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:55:46,585 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i[873,886] [2022-11-25 23:55:46,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:55:46,618 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:55:46,635 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i[873,886] [2022-11-25 23:55:46,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:55:46,664 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:55:46,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:46 WrapperNode [2022-11-25 23:55:46,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:55:46,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:55:46,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:55:46,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:55:46,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:46" (1/1) ... [2022-11-25 23:55:46,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:46" (1/1) ... [2022-11-25 23:55:46,706 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2022-11-25 23:55:46,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:55:46,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:55:46,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:55:46,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:55:46,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:46" (1/1) ... [2022-11-25 23:55:46,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:46" (1/1) ... [2022-11-25 23:55:46,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:46" (1/1) ... [2022-11-25 23:55:46,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:46" (1/1) ... [2022-11-25 23:55:46,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:46" (1/1) ... [2022-11-25 23:55:46,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:46" (1/1) ... [2022-11-25 23:55:46,749 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:46" (1/1) ... [2022-11-25 23:55:46,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:46" (1/1) ... [2022-11-25 23:55:46,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:55:46,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:55:46,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:55:46,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:55:46,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:46" (1/1) ... [2022-11-25 23:55:46,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:55:46,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:55:46,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:55:46,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:55:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:55:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:55:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:55:46,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:55:46,959 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:55:46,962 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:55:47,195 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:55:47,236 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:55:47,236 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:55:47,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:55:47 BoogieIcfgContainer [2022-11-25 23:55:47,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:55:47,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:55:47,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:55:47,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:55:47,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:55:46" (1/3) ... [2022-11-25 23:55:47,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee2df0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:55:47, skipping insertion in model container [2022-11-25 23:55:47,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:55:46" (2/3) ... [2022-11-25 23:55:47,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee2df0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:55:47, skipping insertion in model container [2022-11-25 23:55:47,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:55:47" (3/3) ... [2022-11-25 23:55:47,252 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark24_conjunctive.i [2022-11-25 23:55:47,277 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:55:47,277 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-25 23:55:47,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:55:47,362 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;@3b0158a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:55:47,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-25 23:55:47,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:47,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:55:47,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:47,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:55:47,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:55:47,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:47,383 INFO L85 PathProgramCache]: Analyzing trace with hash 2301147, now seen corresponding path program 1 times [2022-11-25 23:55:47,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:47,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247970594] [2022-11-25 23:55:47,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:47,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:47,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:47,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247970594] [2022-11-25 23:55:47,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247970594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:47,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:55:47,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:55:47,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671129568] [2022-11-25 23:55:47,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:47,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:55:47,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:47,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:55:47,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:55:47,699 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:47,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:47,819 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2022-11-25 23:55:47,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:55:47,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-25 23:55:47,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:47,833 INFO L225 Difference]: With dead ends: 36 [2022-11-25 23:55:47,833 INFO L226 Difference]: Without dead ends: 31 [2022-11-25 23:55:47,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:55:47,842 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:47,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:55:47,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-25 23:55:47,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2022-11-25 23:55:47,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:47,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-11-25 23:55:47,885 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 4 [2022-11-25 23:55:47,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:47,886 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-11-25 23:55:47,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:47,886 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-11-25 23:55:47,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:55:47,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:47,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:55:47,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:55:47,888 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:55:47,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:47,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2302150, now seen corresponding path program 1 times [2022-11-25 23:55:47,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:47,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860025320] [2022-11-25 23:55:47,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:47,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:47,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:47,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:47,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860025320] [2022-11-25 23:55:47,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860025320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:47,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:55:47,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:55:47,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987203426] [2022-11-25 23:55:47,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:47,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:55:47,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:47,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:55:47,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:55:47,950 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:47,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:47,996 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2022-11-25 23:55:47,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:55:47,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-25 23:55:47,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:47,998 INFO L225 Difference]: With dead ends: 30 [2022-11-25 23:55:47,998 INFO L226 Difference]: Without dead ends: 29 [2022-11-25 23:55:47,999 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 [2022-11-25 23:55:48,001 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:48,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:55:48,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-25 23:55:48,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2022-11-25 23:55:48,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-25 23:55:48,007 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 4 [2022-11-25 23:55:48,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:48,007 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-25 23:55:48,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,008 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-25 23:55:48,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:55:48,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:48,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:55:48,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:55:48,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:55:48,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:48,010 INFO L85 PathProgramCache]: Analyzing trace with hash 71335607, now seen corresponding path program 1 times [2022-11-25 23:55:48,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:48,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004952642] [2022-11-25 23:55:48,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:48,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:48,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:48,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004952642] [2022-11-25 23:55:48,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004952642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:48,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:55:48,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:55:48,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449392080] [2022-11-25 23:55:48,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:48,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:55:48,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:48,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:55:48,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:55:48,142 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:48,181 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-11-25 23:55:48,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:55:48,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 23:55:48,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:48,183 INFO L225 Difference]: With dead ends: 22 [2022-11-25 23:55:48,183 INFO L226 Difference]: Without dead ends: 21 [2022-11-25 23:55:48,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:55:48,185 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:48,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:55:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-25 23:55:48,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-25 23:55:48,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-11-25 23:55:48,192 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 5 [2022-11-25 23:55:48,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:48,192 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-11-25 23:55:48,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,193 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-11-25 23:55:48,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:55:48,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:48,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:55:48,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:55:48,194 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:55:48,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:48,195 INFO L85 PathProgramCache]: Analyzing trace with hash 71366711, now seen corresponding path program 1 times [2022-11-25 23:55:48,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:48,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140694833] [2022-11-25 23:55:48,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:48,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:48,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:48,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:48,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140694833] [2022-11-25 23:55:48,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140694833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:48,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:55:48,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:55:48,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840478953] [2022-11-25 23:55:48,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:48,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:55:48,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:48,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:55:48,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:55:48,260 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:48,358 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-11-25 23:55:48,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:55:48,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 23:55:48,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:48,359 INFO L225 Difference]: With dead ends: 28 [2022-11-25 23:55:48,360 INFO L226 Difference]: Without dead ends: 27 [2022-11-25 23:55:48,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:55:48,362 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:48,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:55:48,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-25 23:55:48,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-11-25 23:55:48,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-25 23:55:48,368 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 5 [2022-11-25 23:55:48,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:48,369 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-25 23:55:48,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,369 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-25 23:55:48,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 23:55:48,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:48,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 23:55:48,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:55:48,371 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:55:48,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:48,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2083563427, now seen corresponding path program 1 times [2022-11-25 23:55:48,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:48,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093467599] [2022-11-25 23:55:48,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:48,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:48,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:48,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093467599] [2022-11-25 23:55:48,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093467599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:48,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:55:48,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:55:48,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391793479] [2022-11-25 23:55:48,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:48,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:55:48,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:48,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:55:48,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:55:48,418 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:48,439 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-11-25 23:55:48,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:55:48,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-25 23:55:48,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:48,441 INFO L225 Difference]: With dead ends: 22 [2022-11-25 23:55:48,442 INFO L226 Difference]: Without dead ends: 21 [2022-11-25 23:55:48,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:55:48,446 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:48,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 10 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:55:48,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-25 23:55:48,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-25 23:55:48,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-11-25 23:55:48,459 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 6 [2022-11-25 23:55:48,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:48,460 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-11-25 23:55:48,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,460 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-11-25 23:55:48,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 23:55:48,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:48,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 23:55:48,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:55:48,465 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:55:48,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:48,466 INFO L85 PathProgramCache]: Analyzing trace with hash -2082599192, now seen corresponding path program 1 times [2022-11-25 23:55:48,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:48,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085004110] [2022-11-25 23:55:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:48,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:48,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:48,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085004110] [2022-11-25 23:55:48,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085004110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:48,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:55:48,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:55:48,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408701672] [2022-11-25 23:55:48,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:48,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:55:48,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:48,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:55:48,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:55:48,551 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:48,565 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-11-25 23:55:48,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:55:48,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-25 23:55:48,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:48,566 INFO L225 Difference]: With dead ends: 21 [2022-11-25 23:55:48,567 INFO L226 Difference]: Without dead ends: 20 [2022-11-25 23:55:48,567 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 [2022-11-25 23:55:48,568 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:48,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 11 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:55:48,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-25 23:55:48,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-25 23:55:48,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-11-25 23:55:48,573 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2022-11-25 23:55:48,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:48,574 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-11-25 23:55:48,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,574 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-11-25 23:55:48,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 23:55:48,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:48,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:55:48,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:55:48,575 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:55:48,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:48,576 INFO L85 PathProgramCache]: Analyzing trace with hash -165956743, now seen corresponding path program 1 times [2022-11-25 23:55:48,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:48,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067007685] [2022-11-25 23:55:48,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:48,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:48,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:48,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067007685] [2022-11-25 23:55:48,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067007685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:48,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:55:48,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:55:48,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804748973] [2022-11-25 23:55:48,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:48,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:55:48,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:48,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:55:48,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:55:48,612 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:48,629 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2022-11-25 23:55:48,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:55:48,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-25 23:55:48,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:48,631 INFO L225 Difference]: With dead ends: 27 [2022-11-25 23:55:48,631 INFO L226 Difference]: Without dead ends: 26 [2022-11-25 23:55:48,632 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 [2022-11-25 23:55:48,633 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:48,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 20 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:55:48,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-25 23:55:48,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-11-25 23:55:48,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 22 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) [2022-11-25 23:55:48,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-11-25 23:55:48,639 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 7 [2022-11-25 23:55:48,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:48,639 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-11-25 23:55:48,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,640 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-11-25 23:55:48,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 23:55:48,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:48,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:55:48,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:55:48,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:55:48,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:48,642 INFO L85 PathProgramCache]: Analyzing trace with hash -136065447, now seen corresponding path program 1 times [2022-11-25 23:55:48,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:48,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947246421] [2022-11-25 23:55:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:48,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:48,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:48,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947246421] [2022-11-25 23:55:48,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947246421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:48,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:55:48,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:55:48,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122864605] [2022-11-25 23:55:48,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:48,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:55:48,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:48,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:55:48,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:55:48,675 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:48,686 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-11-25 23:55:48,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:55:48,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-25 23:55:48,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:48,688 INFO L225 Difference]: With dead ends: 23 [2022-11-25 23:55:48,688 INFO L226 Difference]: Without dead ends: 18 [2022-11-25 23:55:48,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:55:48,689 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:48,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:55:48,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-25 23:55:48,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-25 23:55:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-25 23:55:48,704 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2022-11-25 23:55:48,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:48,704 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-25 23:55:48,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:48,704 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-25 23:55:48,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:55:48,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:48,705 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:55:48,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:55:48,706 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:55:48,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:48,706 INFO L85 PathProgramCache]: Analyzing trace with hash -570638597, now seen corresponding path program 1 times [2022-11-25 23:55:48,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:48,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627984689] [2022-11-25 23:55:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:48,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:48,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:48,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:48,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627984689] [2022-11-25 23:55:48,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627984689] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:55:48,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232305971] [2022-11-25 23:55:48,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:48,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:55:48,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:55:48,971 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:55:48,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:55:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:49,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 23:55:49,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:55:49,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:49,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:55:49,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:49,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232305971] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:55:49,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [265846249] [2022-11-25 23:55:49,357 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-25 23:55:49,357 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:55:49,362 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:55:49,369 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:55:49,369 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:55:49,851 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:55:50,737 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '527#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (< (+ 2147483647 |ULTIMATE.start_main_#t~post4#1|) 0) (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (<= 2 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~k~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:55:50,738 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:55:50,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:55:50,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-25 23:55:50,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667815974] [2022-11-25 23:55:50,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:55:50,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 23:55:50,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:50,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 23:55:50,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:55:50,740 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:50,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:50,935 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-11-25 23:55:50,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 23:55:50,936 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 23:55:50,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:50,937 INFO L225 Difference]: With dead ends: 40 [2022-11-25 23:55:50,937 INFO L226 Difference]: Without dead ends: 38 [2022-11-25 23:55:50,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-25 23:55:50,938 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 50 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:50,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 16 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:55:50,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-25 23:55:50,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2022-11-25 23:55:50,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:50,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-11-25 23:55:50,944 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 9 [2022-11-25 23:55:50,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:50,944 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-11-25 23:55:50,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:50,944 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-11-25 23:55:50,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 23:55:50,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:50,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:55:50,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 23:55:51,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:55:51,150 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:55:51,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:51,151 INFO L85 PathProgramCache]: Analyzing trace with hash -509896169, now seen corresponding path program 1 times [2022-11-25 23:55:51,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:51,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287361522] [2022-11-25 23:55:51,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:51,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:51,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:51,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287361522] [2022-11-25 23:55:51,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287361522] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:55:51,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244318420] [2022-11-25 23:55:51,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:51,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:55:51,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:55:51,251 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:55:51,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:55:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:51,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 23:55:51,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:55:51,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:51,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:55:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:51,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244318420] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:55:51,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [860126472] [2022-11-25 23:55:51,547 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-25 23:55:51,547 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:55:51,548 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:55:51,548 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:55:51,548 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:55:51,869 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:55:53,391 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '698#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483647 (* 2 |ULTIMATE.start_main_~k~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-25 23:55:53,391 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:55:53,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:55:53,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-11-25 23:55:53,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975035099] [2022-11-25 23:55:53,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:55:53,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 23:55:53,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:53,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 23:55:53,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2022-11-25 23:55:53,393 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:53,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:53,576 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2022-11-25 23:55:53,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 23:55:53,576 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 23:55:53,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:53,577 INFO L225 Difference]: With dead ends: 36 [2022-11-25 23:55:53,577 INFO L226 Difference]: Without dead ends: 32 [2022-11-25 23:55:53,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2022-11-25 23:55:53,578 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 21 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:53,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 11 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:55:53,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-25 23:55:53,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2022-11-25 23:55:53,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:53,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-11-25 23:55:53,582 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 10 [2022-11-25 23:55:53,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:53,582 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-11-25 23:55:53,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:53,582 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-11-25 23:55:53,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 23:55:53,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:53,583 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2022-11-25 23:55:53,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:55:53,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 23:55:53,789 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:55:53,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:53,790 INFO L85 PathProgramCache]: Analyzing trace with hash -413835943, now seen corresponding path program 1 times [2022-11-25 23:55:53,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:53,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644097142] [2022-11-25 23:55:53,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:53,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:53,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:53,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644097142] [2022-11-25 23:55:53,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644097142] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:55:53,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185476619] [2022-11-25 23:55:53,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:53,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:55:53,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:55:53,846 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:55:53,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:55:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:53,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:55:53,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:55:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:53,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:55:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:53,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185476619] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:55:53,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1083621406] [2022-11-25 23:55:53,960 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-25 23:55:53,961 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:55:53,961 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:55:53,961 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:55:53,961 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:55:54,189 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:55:54,903 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '863#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:55:54,904 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:55:54,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:55:54,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-25 23:55:54,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477142779] [2022-11-25 23:55:54,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:55:54,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:55:54,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:54,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:55:54,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:55:54,906 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:54,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:54,949 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2022-11-25 23:55:54,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:55:54,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-25 23:55:54,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:54,951 INFO L225 Difference]: With dead ends: 40 [2022-11-25 23:55:54,951 INFO L226 Difference]: Without dead ends: 39 [2022-11-25 23:55:54,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:55:54,953 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:54,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:55:54,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-25 23:55:54,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2022-11-25 23:55:54,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.2) internal successors, (36), 33 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:54,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2022-11-25 23:55:54,971 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 12 [2022-11-25 23:55:54,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:54,971 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2022-11-25 23:55:54,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:54,973 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-11-25 23:55:54,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 23:55:54,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:54,974 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-25 23:55:54,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:55:55,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:55:55,182 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)] === [2022-11-25 23:55:55,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:55,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1735619782, now seen corresponding path program 1 times [2022-11-25 23:55:55,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:55,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418402280] [2022-11-25 23:55:55,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:55,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:55,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:55,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418402280] [2022-11-25 23:55:55,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418402280] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:55:55,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129001457] [2022-11-25 23:55:55,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:55,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:55:55,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:55:55,274 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:55:55,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:55:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:55,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 23:55:55,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:55:55,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:55,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:55:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:55,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129001457] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:55:55,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [957865197] [2022-11-25 23:55:55,620 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-25 23:55:55,620 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:55:55,621 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:55:55,621 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:55:55,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:55:55,860 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:55:56,907 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1049#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= 0 (+ (* 2 |ULTIMATE.start_main_~k~0#1|) 2147483648))) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-25 23:55:56,907 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:55:56,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:55:56,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-25 23:55:56,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684435252] [2022-11-25 23:55:56,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:55:56,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 23:55:56,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:56,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 23:55:56,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2022-11-25 23:55:56,909 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:57,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:57,143 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-11-25 23:55:57,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:55:57,144 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-25 23:55:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:57,145 INFO L225 Difference]: With dead ends: 34 [2022-11-25 23:55:57,145 INFO L226 Difference]: Without dead ends: 31 [2022-11-25 23:55:57,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=223, Invalid=899, Unknown=0, NotChecked=0, Total=1122 [2022-11-25 23:55:57,146 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 49 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:57,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 2 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:55:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-25 23:55:57,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-25 23:55:57,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 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) [2022-11-25 23:55:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2022-11-25 23:55:57,151 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 14 [2022-11-25 23:55:57,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:57,151 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2022-11-25 23:55:57,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2022-11-25 23:55:57,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-25 23:55:57,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:57,152 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2022-11-25 23:55:57,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:55:57,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 23:55:57,358 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:55:57,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:57,359 INFO L85 PathProgramCache]: Analyzing trace with hash 408743447, now seen corresponding path program 2 times [2022-11-25 23:55:57,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:57,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011551829] [2022-11-25 23:55:57,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:57,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:57,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:57,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011551829] [2022-11-25 23:55:57,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011551829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:55:57,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943308262] [2022-11-25 23:55:57,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:55:57,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:55:57,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:55:57,499 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:55:57,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:55:57,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 23:55:57,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:55:57,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 23:55:57,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:55:57,790 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:57,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:55:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:58,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943308262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:55:58,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1267990537] [2022-11-25 23:55:58,115 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-25 23:55:58,117 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:55:58,117 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:55:58,117 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:55:58,118 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:55:58,335 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:55:59,764 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1295#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483647 (* 2 |ULTIMATE.start_main_~k~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-25 23:55:59,764 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:55:59,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:55:59,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 31 [2022-11-25 23:55:59,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626993216] [2022-11-25 23:55:59,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:55:59,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 23:55:59,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:59,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 23:55:59,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2022-11-25 23:55:59,768 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 32 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 32 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) [2022-11-25 23:56:00,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:00,309 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2022-11-25 23:56:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 23:56:00,310 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 32 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 20 [2022-11-25 23:56:00,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:00,311 INFO L225 Difference]: With dead ends: 49 [2022-11-25 23:56:00,311 INFO L226 Difference]: Without dead ends: 44 [2022-11-25 23:56:00,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=477, Invalid=2073, Unknown=0, NotChecked=0, Total=2550 [2022-11-25 23:56:00,313 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 43 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:00,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 6 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:56:00,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-25 23:56:00,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2022-11-25 23:56:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.1) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:56:00,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2022-11-25 23:56:00,321 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 20 [2022-11-25 23:56:00,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:00,322 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2022-11-25 23:56:00,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 32 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) [2022-11-25 23:56:00,322 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2022-11-25 23:56:00,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-25 23:56:00,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:00,323 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1] [2022-11-25 23:56:00,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:56:00,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:00,531 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:56:00,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:00,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1943210873, now seen corresponding path program 2 times [2022-11-25 23:56:00,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:00,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602515709] [2022-11-25 23:56:00,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:00,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:00,607 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:00,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:00,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602515709] [2022-11-25 23:56:00,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602515709] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:56:00,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506364544] [2022-11-25 23:56:00,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:56:00,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:00,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:00,609 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:00,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 23:56:00,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-25 23:56:00,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:56:00,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 23:56:00,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:00,713 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:00,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:56:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:00,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506364544] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:56:00,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [204553055] [2022-11-25 23:56:00,832 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-25 23:56:00,833 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:56:00,834 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:56:00,834 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:56:00,835 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:56:01,055 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:56:01,757 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1600#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:56:01,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:56:01,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:56:01,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-25 23:56:01,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804692365] [2022-11-25 23:56:01,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:56:01,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:56:01,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:56:01,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:56:01,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-25 23:56:01,759 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:56:01,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:01,829 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2022-11-25 23:56:01,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 23:56:01,829 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 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 [2022-11-25 23:56:01,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:01,830 INFO L225 Difference]: With dead ends: 71 [2022-11-25 23:56:01,830 INFO L226 Difference]: Without dead ends: 70 [2022-11-25 23:56:01,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-25 23:56:01,832 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:01,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 40 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:56:01,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-25 23:56:01,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 61. [2022-11-25 23:56:01,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 60 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:56:01,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2022-11-25 23:56:01,840 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 27 [2022-11-25 23:56:01,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:01,841 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2022-11-25 23:56:01,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:56:01,841 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2022-11-25 23:56:01,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-25 23:56:01,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:01,842 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2022-11-25 23:56:01,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:56:02,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:02,048 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:56:02,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:02,049 INFO L85 PathProgramCache]: Analyzing trace with hash 424973847, now seen corresponding path program 3 times [2022-11-25 23:56:02,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:02,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642167892] [2022-11-25 23:56:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:02,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:02,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:02,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642167892] [2022-11-25 23:56:02,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642167892] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:56:02,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716263345] [2022-11-25 23:56:02,519 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:56:02,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:02,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:02,523 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:02,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:56:02,583 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:56:02,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:56:02,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-25 23:56:02,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:03,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:56:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:04,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716263345] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:56:04,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1963377466] [2022-11-25 23:56:04,176 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-25 23:56:04,176 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:56:04,177 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:56:04,177 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:56:04,177 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:56:04,356 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:56:06,072 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2058#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483647 (* 2 |ULTIMATE.start_main_~k~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-25 23:56:06,073 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:56:06,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:56:06,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24, 24] total 63 [2022-11-25 23:56:06,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704171952] [2022-11-25 23:56:06,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:56:06,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-25 23:56:06,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:56:06,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-25 23:56:06,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=835, Invalid=4277, Unknown=0, NotChecked=0, Total=5112 [2022-11-25 23:56:06,078 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 64 states, 63 states have (on average 1.8412698412698412) internal successors, (116), 64 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:56:08,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:08,515 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2022-11-25 23:56:08,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-25 23:56:08,515 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.8412698412698412) internal successors, (116), 64 states have internal predecessors, (116), 0 states have call successors, (0), 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 40 [2022-11-25 23:56:08,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:08,516 INFO L225 Difference]: With dead ends: 91 [2022-11-25 23:56:08,516 INFO L226 Difference]: Without dead ends: 86 [2022-11-25 23:56:08,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3966 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1859, Invalid=7843, Unknown=0, NotChecked=0, Total=9702 [2022-11-25 23:56:08,520 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 137 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:08,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 13 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:56:08,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-25 23:56:08,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2022-11-25 23:56:08,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 1.075) internal successors, (86), 81 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:56:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2022-11-25 23:56:08,531 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 40 [2022-11-25 23:56:08,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:08,532 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2022-11-25 23:56:08,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.8412698412698412) internal successors, (116), 64 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:56:08,532 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2022-11-25 23:56:08,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 23:56:08,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:08,534 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1] [2022-11-25 23:56:08,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 23:56:08,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 23:56:08,740 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:56:08,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:08,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1035046777, now seen corresponding path program 3 times [2022-11-25 23:56:08,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:08,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141911876] [2022-11-25 23:56:08,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:08,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:08,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:08,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141911876] [2022-11-25 23:56:08,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141911876] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:56:08,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707106183] [2022-11-25 23:56:08,972 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:56:08,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:08,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:08,974 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:08,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 23:56:09,064 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:56:09,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:56:09,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 23:56:09,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:09,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:56:09,529 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:09,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707106183] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:56:09,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1712924926] [2022-11-25 23:56:09,531 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-25 23:56:09,531 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:56:09,531 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:56:09,531 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:56:09,531 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:56:09,680 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:56:10,289 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2685#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:56:10,290 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:56:10,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:56:10,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-25 23:56:10,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804515542] [2022-11-25 23:56:10,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:56:10,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 23:56:10,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:56:10,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 23:56:10,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=578, Unknown=0, NotChecked=0, Total=870 [2022-11-25 23:56:10,292 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:56:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:10,417 INFO L93 Difference]: Finished difference Result 143 states and 154 transitions. [2022-11-25 23:56:10,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 23:56:10,418 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 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 57 [2022-11-25 23:56:10,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:10,418 INFO L225 Difference]: With dead ends: 143 [2022-11-25 23:56:10,418 INFO L226 Difference]: Without dead ends: 142 [2022-11-25 23:56:10,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=292, Invalid=578, Unknown=0, NotChecked=0, Total=870 [2022-11-25 23:56:10,420 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 39 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:10,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 68 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:56:10,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-25 23:56:10,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 121. [2022-11-25 23:56:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 119 states have (on average 1.0756302521008403) internal successors, (128), 120 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:56:10,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 128 transitions. [2022-11-25 23:56:10,431 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 128 transitions. Word has length 57 [2022-11-25 23:56:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:10,431 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 128 transitions. [2022-11-25 23:56:10,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:56:10,432 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 128 transitions. [2022-11-25 23:56:10,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-25 23:56:10,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:10,433 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2022-11-25 23:56:10,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 23:56:10,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 23:56:10,648 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:56:10,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:10,648 INFO L85 PathProgramCache]: Analyzing trace with hash -199760361, now seen corresponding path program 4 times [2022-11-25 23:56:10,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:10,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329806919] [2022-11-25 23:56:10,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:10,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:11,989 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:11,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:11,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329806919] [2022-11-25 23:56:11,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329806919] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:56:11,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786439786] [2022-11-25 23:56:11,990 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 23:56:11,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:11,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:11,991 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:11,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 23:56:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:12,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-25 23:56:12,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:14,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:56:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:17,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786439786] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:56:17,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [554901196] [2022-11-25 23:56:17,053 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-25 23:56:17,054 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:56:17,054 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:56:17,054 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:56:17,054 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:56:17,262 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:56:19,523 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3603#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483647 (* 2 |ULTIMATE.start_main_~k~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-25 23:56:19,524 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:56:19,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:56:19,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 48, 48] total 127 [2022-11-25 23:56:19,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012245025] [2022-11-25 23:56:19,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:56:19,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-11-25 23:56:19,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:56:19,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-11-25 23:56:19,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2991, Invalid=15369, Unknown=0, NotChecked=0, Total=18360 [2022-11-25 23:56:19,535 INFO L87 Difference]: Start difference. First operand 121 states and 128 transitions. Second operand has 128 states, 127 states have (on average 1.858267716535433) internal successors, (236), 128 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:56:29,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:29,666 INFO L93 Difference]: Finished difference Result 175 states and 190 transitions. [2022-11-25 23:56:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-11-25 23:56:29,667 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 1.858267716535433) internal successors, (236), 128 states have internal predecessors, (236), 0 states have call successors, (0), 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 80 [2022-11-25 23:56:29,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:29,668 INFO L225 Difference]: With dead ends: 175 [2022-11-25 23:56:29,669 INFO L226 Difference]: Without dead ends: 170 [2022-11-25 23:56:29,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16210 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=7359, Invalid=30471, Unknown=0, NotChecked=0, Total=37830 [2022-11-25 23:56:29,678 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 416 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 2806 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:29,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 20 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2806 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 23:56:29,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-25 23:56:29,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 162. [2022-11-25 23:56:29,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 160 states have (on average 1.0625) internal successors, (170), 161 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:56:29,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 170 transitions. [2022-11-25 23:56:29,699 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 170 transitions. Word has length 80 [2022-11-25 23:56:29,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:29,700 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 170 transitions. [2022-11-25 23:56:29,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 1.858267716535433) internal successors, (236), 128 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:56:29,700 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 170 transitions. [2022-11-25 23:56:29,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-25 23:56:29,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:29,703 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 1, 1, 1] [2022-11-25 23:56:29,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 23:56:29,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:29,910 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:56:29,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:29,911 INFO L85 PathProgramCache]: Analyzing trace with hash 368154489, now seen corresponding path program 4 times [2022-11-25 23:56:29,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:29,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225774909] [2022-11-25 23:56:29,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:29,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:30,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:30,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225774909] [2022-11-25 23:56:30,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225774909] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:56:30,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586229095] [2022-11-25 23:56:30,638 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 23:56:30,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:30,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:30,640 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:30,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 23:56:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:30,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 23:56:30,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:30,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:30,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:56:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:31,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586229095] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:56:31,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [727017268] [2022-11-25 23:56:31,936 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-25 23:56:31,936 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:56:31,937 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:56:31,937 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:56:31,937 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:56:32,136 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:56:32,921 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4874#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:56:32,921 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:56:32,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:56:32,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-25 23:56:32,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667631923] [2022-11-25 23:56:32,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:56:32,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-25 23:56:32,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:56:32,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-25 23:56:32,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1144, Invalid=1718, Unknown=0, NotChecked=0, Total=2862 [2022-11-25 23:56:32,924 INFO L87 Difference]: Start difference. First operand 162 states and 170 transitions. Second operand has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:56:33,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:33,225 INFO L93 Difference]: Finished difference Result 287 states and 310 transitions. [2022-11-25 23:56:33,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-25 23:56:33,226 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 0 states have call successors, (0), 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 117 [2022-11-25 23:56:33,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:33,228 INFO L225 Difference]: With dead ends: 287 [2022-11-25 23:56:33,228 INFO L226 Difference]: Without dead ends: 286 [2022-11-25 23:56:33,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1144, Invalid=1718, Unknown=0, NotChecked=0, Total=2862 [2022-11-25 23:56:33,231 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 129 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:33,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 136 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:56:33,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-11-25 23:56:33,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 241. [2022-11-25 23:56:33,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 239 states have (on average 1.0711297071129706) internal successors, (256), 240 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:56:33,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 256 transitions. [2022-11-25 23:56:33,256 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 256 transitions. Word has length 117 [2022-11-25 23:56:33,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:33,257 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 256 transitions. [2022-11-25 23:56:33,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:56:33,258 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 256 transitions. [2022-11-25 23:56:33,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-25 23:56:33,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:33,267 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1, 1, 1] [2022-11-25 23:56:33,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 23:56:33,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 23:56:33,472 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:56:33,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:33,472 INFO L85 PathProgramCache]: Analyzing trace with hash -454130153, now seen corresponding path program 5 times [2022-11-25 23:56:33,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:33,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402715166] [2022-11-25 23:56:33,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:33,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:37,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:37,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:37,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402715166] [2022-11-25 23:56:37,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402715166] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:56:37,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780820856] [2022-11-25 23:56:37,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:56:37,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:37,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:37,559 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:37,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 23:56:37,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2022-11-25 23:56:37,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:56:37,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-25 23:56:37,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:43,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:56:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:53,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780820856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:56:53,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1494712269] [2022-11-25 23:56:53,401 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-25 23:56:53,401 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:56:53,402 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:56:53,402 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:56:53,402 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:56:53,620 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:56:56,821 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6712#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483647 (* 2 |ULTIMATE.start_main_~k~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-25 23:56:56,822 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:56:56,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:56:56,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 96, 96] total 255 [2022-11-25 23:56:56,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451703032] [2022-11-25 23:56:56,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:56:56,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 256 states [2022-11-25 23:56:56,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:56:56,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2022-11-25 23:56:56,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11335, Invalid=58097, Unknown=0, NotChecked=0, Total=69432 [2022-11-25 23:56:56,839 INFO L87 Difference]: Start difference. First operand 241 states and 256 transitions. Second operand has 256 states, 255 states have (on average 1.8666666666666667) internal successors, (476), 256 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:57:48,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:57:48,753 INFO L93 Difference]: Finished difference Result 343 states and 374 transitions. [2022-11-25 23:57:48,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-11-25 23:57:48,754 INFO L78 Accepts]: Start accepts. Automaton has has 256 states, 255 states have (on average 1.8666666666666667) internal successors, (476), 256 states have internal predecessors, (476), 0 states have call successors, (0), 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 160 [2022-11-25 23:57:48,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:57:48,755 INFO L225 Difference]: With dead ends: 343 [2022-11-25 23:57:48,756 INFO L226 Difference]: Without dead ends: 338 [2022-11-25 23:57:48,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65466 ImplicationChecksByTransitivity, 65.7s TimeCoverageRelationStatistics Valid=29303, Invalid=120079, Unknown=0, NotChecked=0, Total=149382 [2022-11-25 23:57:48,769 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1515 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 9665 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 9666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:57:48,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 36 Invalid, 9666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9665 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-25 23:57:48,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-11-25 23:57:48,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 322. [2022-11-25 23:57:48,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 320 states have (on average 1.05625) internal successors, (338), 321 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:57:48,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 338 transitions. [2022-11-25 23:57:48,811 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 338 transitions. Word has length 160 [2022-11-25 23:57:48,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:57:48,812 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 338 transitions. [2022-11-25 23:57:48,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 256 states, 255 states have (on average 1.8666666666666667) internal successors, (476), 256 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:57:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 338 transitions. [2022-11-25 23:57:48,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-25 23:57:48,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:57:48,816 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 1, 1, 1] [2022-11-25 23:57:48,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 23:57:49,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:57:49,019 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:57:49,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:57:49,019 INFO L85 PathProgramCache]: Analyzing trace with hash 796764025, now seen corresponding path program 5 times [2022-11-25 23:57:49,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:57:49,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298391346] [2022-11-25 23:57:49,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:57:49,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:57:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:57:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 5405 backedges. 0 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:51,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:57:51,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298391346] [2022-11-25 23:57:51,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298391346] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:57:51,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909909973] [2022-11-25 23:57:51,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:57:51,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:57:51,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:57:51,144 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:57:51,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 23:57:51,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-25 23:57:51,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:57:51,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-25 23:57:51,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:57:51,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5405 backedges. 0 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:51,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:57:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 5405 backedges. 0 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:57:54,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909909973] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:57:54,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [916480392] [2022-11-25 23:57:54,980 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-25 23:57:54,980 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:57:54,980 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:57:54,981 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:57:54,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:57:55,123 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:57:55,952 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9271#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:57:55,952 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:57:55,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:57:55,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-11-25 23:57:55,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428846596] [2022-11-25 23:57:55,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:57:55,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-25 23:57:55,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:57:55,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-25 23:57:55,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4576, Invalid=5726, Unknown=0, NotChecked=0, Total=10302 [2022-11-25 23:57:55,957 INFO L87 Difference]: Start difference. First operand 322 states and 338 transitions. Second operand has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 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) [2022-11-25 23:57:56,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:57:56,582 INFO L93 Difference]: Finished difference Result 575 states and 622 transitions. [2022-11-25 23:57:56,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-25 23:57:56,583 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 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) Word has length 237 [2022-11-25 23:57:56,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:57:56,586 INFO L225 Difference]: With dead ends: 575 [2022-11-25 23:57:56,586 INFO L226 Difference]: Without dead ends: 574 [2022-11-25 23:57:56,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4576, Invalid=5726, Unknown=0, NotChecked=0, Total=10302 [2022-11-25 23:57:56,589 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 270 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:57:56,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 268 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:57:56,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-11-25 23:57:56,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 481. [2022-11-25 23:57:56,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 479 states have (on average 1.068893528183716) internal successors, (512), 480 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:57:56,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 512 transitions. [2022-11-25 23:57:56,635 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 512 transitions. Word has length 237 [2022-11-25 23:57:56,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:57:56,636 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 512 transitions. [2022-11-25 23:57:56,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 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) [2022-11-25 23:57:56,637 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 512 transitions. [2022-11-25 23:57:56,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-25 23:57:56,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:57:56,642 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 63, 1, 1, 1, 1, 1] [2022-11-25 23:57:56,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-25 23:57:56,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:57:56,848 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 23:57:56,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:57:56,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1943782935, now seen corresponding path program 6 times [2022-11-25 23:57:56,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:57:56,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823928834] [2022-11-25 23:57:56,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:57:56,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:57:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:58:10,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:58:10,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:58:10,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823928834] [2022-11-25 23:58:10,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823928834] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:58:10,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593588223] [2022-11-25 23:58:10,360 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:58:10,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:58:10,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:58:10,361 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:58:10,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 23:58:10,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:58:10,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:58:10,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 193 conjunts are in the unsatisfiable core [2022-11-25 23:58:10,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:58:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:58:29,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:59:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:59:10,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593588223] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:59:10,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1340520535] [2022-11-25 23:59:10,667 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-25 23:59:10,667 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:59:10,668 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:59:10,668 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:59:10,668 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:59:10,887 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:59:16,446 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12949#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483647 (* 2 |ULTIMATE.start_main_~k~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-25 23:59:16,446 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:59:16,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:59:16,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 192, 192] total 511 [2022-11-25 23:59:16,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482149401] [2022-11-25 23:59:16,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:59:16,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 512 states [2022-11-25 23:59:16,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:59:16,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 512 interpolants. [2022-11-25 23:59:16,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44151, Invalid=225729, Unknown=0, NotChecked=0, Total=269880 [2022-11-25 23:59:16,464 INFO L87 Difference]: Start difference. First operand 481 states and 512 transitions. Second operand has 512 states, 511 states have (on average 1.8708414872798433) internal successors, (956), 512 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:04:18,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:04:18,860 INFO L93 Difference]: Finished difference Result 679 states and 742 transitions. [2022-11-26 00:04:18,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2022-11-26 00:04:18,862 INFO L78 Accepts]: Start accepts. Automaton has has 512 states, 511 states have (on average 1.8708414872798433) internal successors, (956), 512 states have internal predecessors, (956), 0 states have call successors, (0), 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 320 [2022-11-26 00:04:18,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:04:18,865 INFO L225 Difference]: With dead ends: 679 [2022-11-26 00:04:18,865 INFO L226 Difference]: Without dead ends: 674 [2022-11-26 00:04:18,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1401 GetRequests, 632 SyntacticMatches, 0 SemanticMatches, 769 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263050 ImplicationChecksByTransitivity, 351.5s TimeCoverageRelationStatistics Valid=116967, Invalid=476703, Unknown=0, NotChecked=0, Total=593670 [2022-11-26 00:04:18,903 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5987 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 33048 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5987 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 33049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:04:18,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5987 Valid, 67 Invalid, 33049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 33048 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time] [2022-11-26 00:04:18,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-11-26 00:04:18,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 642. [2022-11-26 00:04:19,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 640 states have (on average 1.053125) internal successors, (674), 641 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:04:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 674 transitions. [2022-11-26 00:04:19,003 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 674 transitions. Word has length 320 [2022-11-26 00:04:19,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:04:19,003 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 674 transitions. [2022-11-26 00:04:19,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 512 states, 511 states have (on average 1.8708414872798433) internal successors, (956), 512 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:04:19,005 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 674 transitions. [2022-11-26 00:04:19,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-11-26 00:04:19,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:04:19,015 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 94, 1, 1, 1] [2022-11-26 00:04:19,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-26 00:04:19,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:04:19,221 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-26 00:04:19,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:04:19,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1053149049, now seen corresponding path program 6 times [2022-11-26 00:04:19,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:04:19,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63294899] [2022-11-26 00:04:19,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:04:19,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:04:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:04:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 22325 backedges. 0 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:04:26,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:04:26,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63294899] [2022-11-26 00:04:26,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63294899] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:04:26,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195041206] [2022-11-26 00:04:26,097 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:04:26,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:04:26,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:04:26,098 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:04:26,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-26 00:04:26,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:04:26,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:04:26,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-26 00:04:26,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:04:26,920 INFO L134 CoverageAnalysis]: Checked inductivity of 22325 backedges. 0 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:04:26,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:04:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 22325 backedges. 0 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:04:38,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195041206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:04:38,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [183686784] [2022-11-26 00:04:38,620 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 00:04:38,621 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:04:38,621 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:04:38,621 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:04:38,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:04:38,738 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:04:39,898 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18084#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:04:39,898 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:04:39,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:04:39,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-11-26 00:04:39,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363915957] [2022-11-26 00:04:39,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:04:39,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-26 00:04:39,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:04:39,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-26 00:04:39,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18352, Invalid=20654, Unknown=0, NotChecked=0, Total=39006 [2022-11-26 00:04:39,911 INFO L87 Difference]: Start difference. First operand 642 states and 674 transitions. Second operand has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:04:42,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:04:42,135 INFO L93 Difference]: Finished difference Result 1151 states and 1246 transitions. [2022-11-26 00:04:42,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-26 00:04:42,138 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 0 states have call successors, (0), 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 477 [2022-11-26 00:04:42,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:04:42,143 INFO L225 Difference]: With dead ends: 1151 [2022-11-26 00:04:42,143 INFO L226 Difference]: Without dead ends: 1150 [2022-11-26 00:04:42,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1525 GetRequests, 1329 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=18352, Invalid=20654, Unknown=0, NotChecked=0, Total=39006 [2022-11-26 00:04:42,147 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 570 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:04:42,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 518 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 00:04:42,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2022-11-26 00:04:42,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 961. [2022-11-26 00:04:42,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 959 states have (on average 1.067778936392075) internal successors, (1024), 960 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:04:42,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1024 transitions. [2022-11-26 00:04:42,254 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1024 transitions. Word has length 477 [2022-11-26 00:04:42,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:04:42,255 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1024 transitions. [2022-11-26 00:04:42,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:04:42,256 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1024 transitions. [2022-11-26 00:04:42,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2022-11-26 00:04:42,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:04:42,261 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 127, 127, 127, 1, 1, 1, 1, 1] [2022-11-26 00:04:42,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-26 00:04:42,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-26 00:04:42,468 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-26 00:04:42,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:04:42,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1186350615, now seen corresponding path program 7 times [2022-11-26 00:04:42,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:04:42,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669141611] [2022-11-26 00:04:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:04:42,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:04:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:05:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:05:39,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:05:39,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669141611] [2022-11-26 00:05:39,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669141611] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:05:39,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402257026] [2022-11-26 00:05:39,463 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 00:05:39,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:05:39,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:05:39,464 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:05:39,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef36b062-7bb4-41ae-8462-d374dbb794bd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-26 00:05:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:05:39,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 1432 conjuncts, 385 conjunts are in the unsatisfiable core [2022-11-26 00:05:39,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:06:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:06:48,162 INFO L328 TraceCheckSpWp]: Computing backward predicates...