./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:39:31,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:39:31,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:39:31,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:39:31,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:39:31,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:39:31,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:39:31,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:39:31,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:39:31,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:39:31,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:39:31,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:39:31,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:39:31,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:39:31,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:39:31,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:39:31,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:39:31,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:39:31,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:39:31,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:39:31,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:39:31,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:39:31,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:39:31,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:39:31,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:39:31,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:39:31,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:39:31,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:39:31,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:39:31,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:39:31,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:39:31,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:39:31,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:39:31,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:39:31,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:39:31,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:39:31,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:39:31,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:39:31,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:39:31,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:39:31,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:39:31,185 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 01:39:31,221 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:39:31,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:39:31,222 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:39:31,222 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:39:31,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:39:31,223 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:39:31,223 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:39:31,223 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:39:31,223 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:39:31,224 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:39:31,224 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:39:31,224 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:39:31,224 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:39:31,224 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:39:31,224 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:39:31,225 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:39:31,225 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:39:31,225 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:39:31,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:39:31,229 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:39:31,229 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 01:39:31,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:39:31,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:39:31,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:39:31,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:39:31,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:39:31,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:39:31,231 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 01:39:31,232 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:39:31,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:39:31,232 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:39:31,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:39:31,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:39:31,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:39:31,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:39:31,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:39:31,235 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:39:31,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:39:31,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:39:31,236 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:39:31,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:39:31,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:39:31,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:39:31,237 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_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 [2022-11-03 01:39:31,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:39:31,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:39:31,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:39:31,566 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:39:31,567 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:39:31,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-03 01:39:31,644 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI/data/5e04a6186/90b90c7752394e6c9358087b84baddcd/FLAG94cb02301 [2022-11-03 01:39:32,058 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:39:32,058 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-03 01:39:32,066 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI/data/5e04a6186/90b90c7752394e6c9358087b84baddcd/FLAG94cb02301 [2022-11-03 01:39:32,453 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI/data/5e04a6186/90b90c7752394e6c9358087b84baddcd [2022-11-03 01:39:32,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:39:32,456 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:39:32,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:39:32,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:39:32,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:39:32,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:39:32" (1/1) ... [2022-11-03 01:39:32,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5911b618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:32, skipping insertion in model container [2022-11-03 01:39:32,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:39:32" (1/1) ... [2022-11-03 01:39:32,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:39:32,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:39:32,754 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-03 01:39:32,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:39:32,764 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:39:32,801 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-03 01:39:32,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:39:32,816 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:39:32,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:32 WrapperNode [2022-11-03 01:39:32,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:39:32,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:39:32,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:39:32,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:39:32,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:32" (1/1) ... [2022-11-03 01:39:32,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:32" (1/1) ... [2022-11-03 01:39:32,882 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 291 [2022-11-03 01:39:32,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:39:32,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:39:32,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:39:32,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:39:32,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:32" (1/1) ... [2022-11-03 01:39:32,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:32" (1/1) ... [2022-11-03 01:39:32,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:32" (1/1) ... [2022-11-03 01:39:32,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:32" (1/1) ... [2022-11-03 01:39:32,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:32" (1/1) ... [2022-11-03 01:39:32,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:32" (1/1) ... [2022-11-03 01:39:32,946 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:32" (1/1) ... [2022-11-03 01:39:32,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:32" (1/1) ... [2022-11-03 01:39:32,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:39:32,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:39:32,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:39:32,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:39:32,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:32" (1/1) ... [2022-11-03 01:39:32,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:39:32,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:39:32,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:39:33,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:39:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:39:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-03 01:39:33,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-03 01:39:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-03 01:39:33,044 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-03 01:39:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-03 01:39:33,044 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-03 01:39:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:39:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:39:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:39:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-03 01:39:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-03 01:39:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:39:33,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:39:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:39:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:39:33,047 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 01:39:33,186 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:39:33,187 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:39:33,690 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:39:33,885 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:39:33,885 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:39:33,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:39:33 BoogieIcfgContainer [2022-11-03 01:39:33,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:39:33,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:39:33,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:39:33,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:39:33,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:39:32" (1/3) ... [2022-11-03 01:39:33,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6fabe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:39:33, skipping insertion in model container [2022-11-03 01:39:33,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:32" (2/3) ... [2022-11-03 01:39:33,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6fabe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:39:33, skipping insertion in model container [2022-11-03 01:39:33,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:39:33" (3/3) ... [2022-11-03 01:39:33,918 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2022-11-03 01:39:33,928 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 01:39:33,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:39:33,941 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-03 01:39:33,941 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 01:39:34,064 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-03 01:39:34,101 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 01:39:34,116 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 163 transitions, 350 flow [2022-11-03 01:39:34,119 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 163 transitions, 350 flow [2022-11-03 01:39:34,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 163 transitions, 350 flow [2022-11-03 01:39:34,200 INFO L130 PetriNetUnfolder]: 2/160 cut-off events. [2022-11-03 01:39:34,200 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-03 01:39:34,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 160 events. 2/160 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 162 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2022-11-03 01:39:34,206 INFO L118 LiptonReduction]: Number of co-enabled transitions 3240 [2022-11-03 01:39:41,022 INFO L133 LiptonReduction]: Checked pairs total: 24651 [2022-11-03 01:39:41,023 INFO L135 LiptonReduction]: Total number of compositions: 131 [2022-11-03 01:39:41,035 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 58 transitions, 140 flow [2022-11-03 01:39:41,413 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7684 states, 7557 states have (on average 3.292973402143708) internal successors, (24885), 7683 states have internal predecessors, (24885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:41,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:39:41,439 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;@f52c359, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:39:41,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-03 01:39:41,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 7684 states, 7557 states have (on average 3.292973402143708) internal successors, (24885), 7683 states have internal predecessors, (24885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:41,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 01:39:41,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:41,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 01:39:41,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:41,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:41,476 INFO L85 PathProgramCache]: Analyzing trace with hash 27541064, now seen corresponding path program 1 times [2022-11-03 01:39:41,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:41,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498329607] [2022-11-03 01:39:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:41,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:42,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:42,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498329607] [2022-11-03 01:39:42,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498329607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:42,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:42,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:39:42,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525179778] [2022-11-03 01:39:42,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:42,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:39:42,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:42,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:39:42,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:39:42,222 INFO L87 Difference]: Start difference. First operand has 7684 states, 7557 states have (on average 3.292973402143708) internal successors, (24885), 7683 states have internal predecessors, (24885), 0 states have call successors, (0), 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), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:42,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:42,663 INFO L93 Difference]: Finished difference Result 7926 states and 26094 transitions. [2022-11-03 01:39:42,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:39:42,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-03 01:39:42,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:42,769 INFO L225 Difference]: With dead ends: 7926 [2022-11-03 01:39:42,769 INFO L226 Difference]: Without dead ends: 7876 [2022-11-03 01:39:42,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:39:42,775 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 49 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:42,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 9 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:39:42,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7876 states. [2022-11-03 01:39:43,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7876 to 7876. [2022-11-03 01:39:43,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7876 states, 7752 states have (on average 3.3445562435500515) internal successors, (25927), 7875 states have internal predecessors, (25927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:43,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7876 states to 7876 states and 25927 transitions. [2022-11-03 01:39:43,336 INFO L78 Accepts]: Start accepts. Automaton has 7876 states and 25927 transitions. Word has length 4 [2022-11-03 01:39:43,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:43,337 INFO L495 AbstractCegarLoop]: Abstraction has 7876 states and 25927 transitions. [2022-11-03 01:39:43,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:43,338 INFO L276 IsEmpty]: Start isEmpty. Operand 7876 states and 25927 transitions. [2022-11-03 01:39:43,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 01:39:43,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:43,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 01:39:43,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:39:43,339 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:43,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:43,340 INFO L85 PathProgramCache]: Analyzing trace with hash 27541065, now seen corresponding path program 1 times [2022-11-03 01:39:43,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:43,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454717102] [2022-11-03 01:39:43,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:43,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:43,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:43,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454717102] [2022-11-03 01:39:43,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454717102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:43,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:43,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:39:43,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701228743] [2022-11-03 01:39:43,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:43,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:39:43,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:43,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:39:43,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:39:43,527 INFO L87 Difference]: Start difference. First operand 7876 states and 25927 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:43,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:43,845 INFO L93 Difference]: Finished difference Result 7902 states and 26034 transitions. [2022-11-03 01:39:43,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:39:43,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-03 01:39:43,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:43,924 INFO L225 Difference]: With dead ends: 7902 [2022-11-03 01:39:43,924 INFO L226 Difference]: Without dead ends: 7902 [2022-11-03 01:39:43,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:39:43,927 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 23 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:43,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 7 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:39:43,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7902 states. [2022-11-03 01:39:44,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7902 to 7874. [2022-11-03 01:39:44,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7874 states, 7758 states have (on average 3.3439030678009796) internal successors, (25942), 7873 states have internal predecessors, (25942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:44,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7874 states to 7874 states and 25942 transitions. [2022-11-03 01:39:44,329 INFO L78 Accepts]: Start accepts. Automaton has 7874 states and 25942 transitions. Word has length 4 [2022-11-03 01:39:44,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:44,329 INFO L495 AbstractCegarLoop]: Abstraction has 7874 states and 25942 transitions. [2022-11-03 01:39:44,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:44,331 INFO L276 IsEmpty]: Start isEmpty. Operand 7874 states and 25942 transitions. [2022-11-03 01:39:44,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 01:39:44,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:44,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:44,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:39:44,333 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:44,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:44,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1840002270, now seen corresponding path program 1 times [2022-11-03 01:39:44,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:44,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233207224] [2022-11-03 01:39:44,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:44,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:44,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:44,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:44,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233207224] [2022-11-03 01:39:44,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233207224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:44,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:44,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:39:44,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097230757] [2022-11-03 01:39:44,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:44,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:39:44,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:44,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:39:44,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:39:44,870 INFO L87 Difference]: Start difference. First operand 7874 states and 25942 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:45,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:45,213 INFO L93 Difference]: Finished difference Result 9450 states and 30903 transitions. [2022-11-03 01:39:45,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:39:45,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 01:39:45,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:45,267 INFO L225 Difference]: With dead ends: 9450 [2022-11-03 01:39:45,268 INFO L226 Difference]: Without dead ends: 9450 [2022-11-03 01:39:45,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:39:45,269 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 68 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:45,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 10 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:39:45,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9450 states. [2022-11-03 01:39:45,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9450 to 8346. [2022-11-03 01:39:45,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8346 states, 8230 states have (on average 3.330741190765492) internal successors, (27412), 8345 states have internal predecessors, (27412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:45,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8346 states to 8346 states and 27412 transitions. [2022-11-03 01:39:45,700 INFO L78 Accepts]: Start accepts. Automaton has 8346 states and 27412 transitions. Word has length 9 [2022-11-03 01:39:45,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:45,700 INFO L495 AbstractCegarLoop]: Abstraction has 8346 states and 27412 transitions. [2022-11-03 01:39:45,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:45,701 INFO L276 IsEmpty]: Start isEmpty. Operand 8346 states and 27412 transitions. [2022-11-03 01:39:45,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 01:39:45,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:45,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:45,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:39:45,703 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:45,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:45,704 INFO L85 PathProgramCache]: Analyzing trace with hash 826573352, now seen corresponding path program 1 times [2022-11-03 01:39:45,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:45,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114375839] [2022-11-03 01:39:45,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:45,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:46,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:46,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:46,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114375839] [2022-11-03 01:39:46,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114375839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:46,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:46,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:39:46,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417182675] [2022-11-03 01:39:46,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:46,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:39:46,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:46,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:39:46,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:39:46,024 INFO L87 Difference]: Start difference. First operand 8346 states and 27412 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:46,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:46,364 INFO L93 Difference]: Finished difference Result 9440 states and 31343 transitions. [2022-11-03 01:39:46,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:39:46,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 01:39:46,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:46,419 INFO L225 Difference]: With dead ends: 9440 [2022-11-03 01:39:46,419 INFO L226 Difference]: Without dead ends: 9440 [2022-11-03 01:39:46,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:39:46,421 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 39 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:46,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 14 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:39:46,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9440 states. [2022-11-03 01:39:46,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9440 to 8350. [2022-11-03 01:39:46,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8350 states, 8234 states have (on average 3.3466116103959194) internal successors, (27556), 8349 states have internal predecessors, (27556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 27556 transitions. [2022-11-03 01:39:46,863 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 27556 transitions. Word has length 9 [2022-11-03 01:39:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:46,863 INFO L495 AbstractCegarLoop]: Abstraction has 8350 states and 27556 transitions. [2022-11-03 01:39:46,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 27556 transitions. [2022-11-03 01:39:46,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 01:39:46,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:46,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:46,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:39:46,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:46,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash 472644411, now seen corresponding path program 1 times [2022-11-03 01:39:46,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:46,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845069565] [2022-11-03 01:39:46,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:46,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:46,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:46,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845069565] [2022-11-03 01:39:46,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845069565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:46,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:46,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 01:39:46,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576077740] [2022-11-03 01:39:46,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:46,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:39:46,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:46,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:39:46,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:39:46,970 INFO L87 Difference]: Start difference. First operand 8350 states and 27556 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:47,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:47,133 INFO L93 Difference]: Finished difference Result 6342 states and 20426 transitions. [2022-11-03 01:39:47,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:39:47,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 01:39:47,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:47,159 INFO L225 Difference]: With dead ends: 6342 [2022-11-03 01:39:47,159 INFO L226 Difference]: Without dead ends: 6342 [2022-11-03 01:39:47,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:39:47,161 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:47,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:39:47,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6342 states. [2022-11-03 01:39:47,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6342 to 6342. [2022-11-03 01:39:47,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6342 states, 6282 states have (on average 3.2515122572429163) internal successors, (20426), 6341 states have internal predecessors, (20426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:47,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6342 states to 6342 states and 20426 transitions. [2022-11-03 01:39:47,488 INFO L78 Accepts]: Start accepts. Automaton has 6342 states and 20426 transitions. Word has length 9 [2022-11-03 01:39:47,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:47,488 INFO L495 AbstractCegarLoop]: Abstraction has 6342 states and 20426 transitions. [2022-11-03 01:39:47,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:47,489 INFO L276 IsEmpty]: Start isEmpty. Operand 6342 states and 20426 transitions. [2022-11-03 01:39:47,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 01:39:47,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:47,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:47,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:39:47,511 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:47,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:47,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1281974506, now seen corresponding path program 1 times [2022-11-03 01:39:47,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:47,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738302503] [2022-11-03 01:39:47,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:47,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:47,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:47,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:47,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738302503] [2022-11-03 01:39:47,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738302503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:47,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:47,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:39:47,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679545698] [2022-11-03 01:39:47,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:47,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:39:47,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:47,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:39:47,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:39:47,660 INFO L87 Difference]: Start difference. First operand 6342 states and 20426 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:47,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:47,771 INFO L93 Difference]: Finished difference Result 5468 states and 17570 transitions. [2022-11-03 01:39:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:39:47,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 01:39:47,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:47,792 INFO L225 Difference]: With dead ends: 5468 [2022-11-03 01:39:47,792 INFO L226 Difference]: Without dead ends: 5468 [2022-11-03 01:39:47,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:39:47,793 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 77 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:47,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 3 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:39:47,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5468 states. [2022-11-03 01:39:47,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5468 to 5100. [2022-11-03 01:39:47,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5100 states, 5064 states have (on average 3.170221169036335) internal successors, (16054), 5099 states have internal predecessors, (16054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:47,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 16054 transitions. [2022-11-03 01:39:47,942 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 16054 transitions. Word has length 11 [2022-11-03 01:39:47,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:47,943 INFO L495 AbstractCegarLoop]: Abstraction has 5100 states and 16054 transitions. [2022-11-03 01:39:47,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:47,943 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 16054 transitions. [2022-11-03 01:39:47,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 01:39:47,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:47,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:47,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:39:47,945 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:47,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:47,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1281974505, now seen corresponding path program 1 times [2022-11-03 01:39:47,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:47,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225993017] [2022-11-03 01:39:47,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:47,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:48,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:48,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225993017] [2022-11-03 01:39:48,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225993017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:48,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:48,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:39:48,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937695720] [2022-11-03 01:39:48,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:48,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:39:48,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:48,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:39:48,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:39:48,277 INFO L87 Difference]: Start difference. First operand 5100 states and 16054 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:48,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:48,523 INFO L93 Difference]: Finished difference Result 5728 states and 18156 transitions. [2022-11-03 01:39:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:39:48,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 01:39:48,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:48,544 INFO L225 Difference]: With dead ends: 5728 [2022-11-03 01:39:48,544 INFO L226 Difference]: Without dead ends: 5728 [2022-11-03 01:39:48,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:39:48,545 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 38 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:48,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 15 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:39:48,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5728 states. [2022-11-03 01:39:48,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5728 to 5316. [2022-11-03 01:39:48,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5280 states have (on average 3.178030303030303) internal successors, (16780), 5315 states have internal predecessors, (16780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:48,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 16780 transitions. [2022-11-03 01:39:48,693 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 16780 transitions. Word has length 11 [2022-11-03 01:39:48,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:48,694 INFO L495 AbstractCegarLoop]: Abstraction has 5316 states and 16780 transitions. [2022-11-03 01:39:48,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:48,694 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 16780 transitions. [2022-11-03 01:39:48,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 01:39:48,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:48,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:48,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:39:48,696 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:48,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:48,696 INFO L85 PathProgramCache]: Analyzing trace with hash -206551179, now seen corresponding path program 1 times [2022-11-03 01:39:48,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:48,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27390204] [2022-11-03 01:39:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:48,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:49,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:49,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27390204] [2022-11-03 01:39:49,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27390204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:49,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:49,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:39:49,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858255176] [2022-11-03 01:39:49,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:49,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:39:49,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:49,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:39:49,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:39:49,024 INFO L87 Difference]: Start difference. First operand 5316 states and 16780 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:49,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:49,267 INFO L93 Difference]: Finished difference Result 5958 states and 18873 transitions. [2022-11-03 01:39:49,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:39:49,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 01:39:49,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:49,293 INFO L225 Difference]: With dead ends: 5958 [2022-11-03 01:39:49,293 INFO L226 Difference]: Without dead ends: 5958 [2022-11-03 01:39:49,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:39:49,294 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 43 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:49,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 13 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:39:49,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5958 states. [2022-11-03 01:39:49,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5958 to 5668. [2022-11-03 01:39:49,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 5632 states have (on average 3.188210227272727) internal successors, (17956), 5667 states have internal predecessors, (17956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:49,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 17956 transitions. [2022-11-03 01:39:49,505 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 17956 transitions. Word has length 11 [2022-11-03 01:39:49,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:49,506 INFO L495 AbstractCegarLoop]: Abstraction has 5668 states and 17956 transitions. [2022-11-03 01:39:49,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:49,506 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 17956 transitions. [2022-11-03 01:39:49,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 01:39:49,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:49,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:49,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:39:49,509 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:49,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:49,509 INFO L85 PathProgramCache]: Analyzing trace with hash -368470917, now seen corresponding path program 2 times [2022-11-03 01:39:49,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:49,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080262926] [2022-11-03 01:39:49,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:49,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:49,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:49,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080262926] [2022-11-03 01:39:49,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080262926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:49,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:49,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:39:49,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578970031] [2022-11-03 01:39:49,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:49,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:39:49,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:49,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:39:49,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:39:49,774 INFO L87 Difference]: Start difference. First operand 5668 states and 17956 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:50,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:50,056 INFO L93 Difference]: Finished difference Result 6364 states and 20194 transitions. [2022-11-03 01:39:50,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:39:50,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 01:39:50,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:50,077 INFO L225 Difference]: With dead ends: 6364 [2022-11-03 01:39:50,077 INFO L226 Difference]: Without dead ends: 6364 [2022-11-03 01:39:50,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:39:50,078 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 44 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:50,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 11 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:39:50,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2022-11-03 01:39:50,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 5694. [2022-11-03 01:39:50,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5694 states, 5659 states have (on average 3.1883725039759674) internal successors, (18043), 5693 states have internal predecessors, (18043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:50,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5694 states to 5694 states and 18043 transitions. [2022-11-03 01:39:50,249 INFO L78 Accepts]: Start accepts. Automaton has 5694 states and 18043 transitions. Word has length 11 [2022-11-03 01:39:50,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:50,249 INFO L495 AbstractCegarLoop]: Abstraction has 5694 states and 18043 transitions. [2022-11-03 01:39:50,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:50,250 INFO L276 IsEmpty]: Start isEmpty. Operand 5694 states and 18043 transitions. [2022-11-03 01:39:50,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:39:50,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:50,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:50,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:39:50,252 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:50,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:50,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1158053948, now seen corresponding path program 1 times [2022-11-03 01:39:50,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:50,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183926455] [2022-11-03 01:39:50,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:50,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:50,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:50,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:50,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183926455] [2022-11-03 01:39:50,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183926455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:50,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:50,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:39:50,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071186018] [2022-11-03 01:39:50,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:50,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:39:50,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:50,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:39:50,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:39:50,494 INFO L87 Difference]: Start difference. First operand 5694 states and 18043 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:50,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:50,832 INFO L93 Difference]: Finished difference Result 7994 states and 25516 transitions. [2022-11-03 01:39:50,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:39:50,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 01:39:50,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:50,858 INFO L225 Difference]: With dead ends: 7994 [2022-11-03 01:39:50,859 INFO L226 Difference]: Without dead ends: 7994 [2022-11-03 01:39:50,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:39:50,860 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 62 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:50,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 21 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:39:50,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7994 states. [2022-11-03 01:39:51,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7994 to 5964. [2022-11-03 01:39:51,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5964 states, 5929 states have (on average 3.189239332096475) internal successors, (18909), 5963 states have internal predecessors, (18909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:51,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5964 states to 5964 states and 18909 transitions. [2022-11-03 01:39:51,096 INFO L78 Accepts]: Start accepts. Automaton has 5964 states and 18909 transitions. Word has length 12 [2022-11-03 01:39:51,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:51,097 INFO L495 AbstractCegarLoop]: Abstraction has 5964 states and 18909 transitions. [2022-11-03 01:39:51,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:51,097 INFO L276 IsEmpty]: Start isEmpty. Operand 5964 states and 18909 transitions. [2022-11-03 01:39:51,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:39:51,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:51,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:51,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 01:39:51,099 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:51,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:51,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1086502538, now seen corresponding path program 2 times [2022-11-03 01:39:51,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:51,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39096094] [2022-11-03 01:39:51,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:51,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:51,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:51,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39096094] [2022-11-03 01:39:51,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39096094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:51,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:51,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:39:51,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165330660] [2022-11-03 01:39:51,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:51,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:39:51,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:51,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:39:51,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:39:51,391 INFO L87 Difference]: Start difference. First operand 5964 states and 18909 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:51,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:51,775 INFO L93 Difference]: Finished difference Result 8970 states and 28436 transitions. [2022-11-03 01:39:51,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:39:51,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 01:39:51,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:51,812 INFO L225 Difference]: With dead ends: 8970 [2022-11-03 01:39:51,812 INFO L226 Difference]: Without dead ends: 8970 [2022-11-03 01:39:51,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:39:51,813 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 115 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:51,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 21 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:39:51,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8970 states. [2022-11-03 01:39:52,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8970 to 6230. [2022-11-03 01:39:52,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6230 states, 6195 states have (on average 3.1919289749798225) internal successors, (19774), 6229 states have internal predecessors, (19774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:52,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 19774 transitions. [2022-11-03 01:39:52,089 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 19774 transitions. Word has length 12 [2022-11-03 01:39:52,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:52,089 INFO L495 AbstractCegarLoop]: Abstraction has 6230 states and 19774 transitions. [2022-11-03 01:39:52,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:52,089 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 19774 transitions. [2022-11-03 01:39:52,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:39:52,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:52,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:52,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 01:39:52,092 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:52,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:52,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1673801941, now seen corresponding path program 1 times [2022-11-03 01:39:52,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:52,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893481512] [2022-11-03 01:39:52,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:52,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:52,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:52,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893481512] [2022-11-03 01:39:52,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893481512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:52,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:52,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:39:52,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987818708] [2022-11-03 01:39:52,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:52,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:39:52,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:52,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:39:52,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:39:52,441 INFO L87 Difference]: Start difference. First operand 6230 states and 19774 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:52,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:52,715 INFO L93 Difference]: Finished difference Result 7062 states and 22290 transitions. [2022-11-03 01:39:52,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:39:52,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 01:39:52,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:52,738 INFO L225 Difference]: With dead ends: 7062 [2022-11-03 01:39:52,738 INFO L226 Difference]: Without dead ends: 7062 [2022-11-03 01:39:52,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:39:52,739 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 67 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:52,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 12 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:39:52,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7062 states. [2022-11-03 01:39:52,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7062 to 6460. [2022-11-03 01:39:52,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6460 states, 6425 states have (on average 3.180077821011673) internal successors, (20432), 6459 states have internal predecessors, (20432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:52,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6460 states to 6460 states and 20432 transitions. [2022-11-03 01:39:52,981 INFO L78 Accepts]: Start accepts. Automaton has 6460 states and 20432 transitions. Word has length 12 [2022-11-03 01:39:52,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:52,981 INFO L495 AbstractCegarLoop]: Abstraction has 6460 states and 20432 transitions. [2022-11-03 01:39:52,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:52,982 INFO L276 IsEmpty]: Start isEmpty. Operand 6460 states and 20432 transitions. [2022-11-03 01:39:52,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:39:52,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:52,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:52,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 01:39:52,985 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:52,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:52,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1673814961, now seen corresponding path program 2 times [2022-11-03 01:39:52,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:52,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553049566] [2022-11-03 01:39:52,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:52,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:53,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:53,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:53,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553049566] [2022-11-03 01:39:53,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553049566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:53,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:53,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:39:53,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80844785] [2022-11-03 01:39:53,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:53,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:39:53,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:53,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:39:53,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:39:53,298 INFO L87 Difference]: Start difference. First operand 6460 states and 20432 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:53,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:53,724 INFO L93 Difference]: Finished difference Result 9042 states and 28712 transitions. [2022-11-03 01:39:53,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:39:53,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 01:39:53,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:53,764 INFO L225 Difference]: With dead ends: 9042 [2022-11-03 01:39:53,764 INFO L226 Difference]: Without dead ends: 9042 [2022-11-03 01:39:53,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:39:53,766 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 82 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:53,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 26 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:39:53,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9042 states. [2022-11-03 01:39:54,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9042 to 6642. [2022-11-03 01:39:54,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6642 states, 6607 states have (on average 3.1742091720902073) internal successors, (20972), 6641 states have internal predecessors, (20972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:54,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6642 states to 6642 states and 20972 transitions. [2022-11-03 01:39:54,074 INFO L78 Accepts]: Start accepts. Automaton has 6642 states and 20972 transitions. Word has length 12 [2022-11-03 01:39:54,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:54,075 INFO L495 AbstractCegarLoop]: Abstraction has 6642 states and 20972 transitions. [2022-11-03 01:39:54,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:54,076 INFO L276 IsEmpty]: Start isEmpty. Operand 6642 states and 20972 transitions. [2022-11-03 01:39:54,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:39:54,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:54,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:54,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 01:39:54,078 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:54,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:54,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1673814912, now seen corresponding path program 1 times [2022-11-03 01:39:54,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:54,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895506231] [2022-11-03 01:39:54,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:54,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:54,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:54,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895506231] [2022-11-03 01:39:54,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895506231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:54,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:54,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:39:54,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177864264] [2022-11-03 01:39:54,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:54,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:39:54,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:54,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:39:54,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:39:54,335 INFO L87 Difference]: Start difference. First operand 6642 states and 20972 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:54,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:54,681 INFO L93 Difference]: Finished difference Result 9366 states and 30244 transitions. [2022-11-03 01:39:54,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:39:54,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 01:39:54,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:54,719 INFO L225 Difference]: With dead ends: 9366 [2022-11-03 01:39:54,719 INFO L226 Difference]: Without dead ends: 9366 [2022-11-03 01:39:54,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:39:54,720 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 89 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:54,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 19 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:39:54,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9366 states. [2022-11-03 01:39:54,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9366 to 6742. [2022-11-03 01:39:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6742 states, 6707 states have (on average 3.178172059042791) internal successors, (21316), 6741 states have internal predecessors, (21316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:54,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6742 states to 6742 states and 21316 transitions. [2022-11-03 01:39:54,945 INFO L78 Accepts]: Start accepts. Automaton has 6742 states and 21316 transitions. Word has length 12 [2022-11-03 01:39:54,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:54,946 INFO L495 AbstractCegarLoop]: Abstraction has 6742 states and 21316 transitions. [2022-11-03 01:39:54,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:54,947 INFO L276 IsEmpty]: Start isEmpty. Operand 6742 states and 21316 transitions. [2022-11-03 01:39:54,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:39:54,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:54,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:54,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 01:39:54,950 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:54,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:54,950 INFO L85 PathProgramCache]: Analyzing trace with hash 231364664, now seen corresponding path program 1 times [2022-11-03 01:39:54,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:54,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686148387] [2022-11-03 01:39:54,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:54,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:55,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:55,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686148387] [2022-11-03 01:39:55,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686148387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:55,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:55,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:39:55,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441421929] [2022-11-03 01:39:55,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:55,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:39:55,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:55,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:39:55,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:39:55,325 INFO L87 Difference]: Start difference. First operand 6742 states and 21316 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:55,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:55,587 INFO L93 Difference]: Finished difference Result 7200 states and 22781 transitions. [2022-11-03 01:39:55,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:39:55,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 01:39:55,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:55,615 INFO L225 Difference]: With dead ends: 7200 [2022-11-03 01:39:55,615 INFO L226 Difference]: Without dead ends: 7200 [2022-11-03 01:39:55,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:39:55,619 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 39 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:55,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 13 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:39:55,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7200 states. [2022-11-03 01:39:55,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7200 to 6758. [2022-11-03 01:39:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6758 states, 6723 states have (on average 3.1786404878774355) internal successors, (21370), 6757 states have internal predecessors, (21370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:55,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6758 states to 6758 states and 21370 transitions. [2022-11-03 01:39:55,815 INFO L78 Accepts]: Start accepts. Automaton has 6758 states and 21370 transitions. Word has length 13 [2022-11-03 01:39:55,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:55,816 INFO L495 AbstractCegarLoop]: Abstraction has 6758 states and 21370 transitions. [2022-11-03 01:39:55,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:55,817 INFO L276 IsEmpty]: Start isEmpty. Operand 6758 states and 21370 transitions. [2022-11-03 01:39:55,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:39:55,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:55,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:55,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 01:39:55,820 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:55,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:55,820 INFO L85 PathProgramCache]: Analyzing trace with hash -927269681, now seen corresponding path program 1 times [2022-11-03 01:39:55,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:55,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067454266] [2022-11-03 01:39:55,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:55,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:56,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:56,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067454266] [2022-11-03 01:39:56,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067454266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:56,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:56,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:39:56,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501528456] [2022-11-03 01:39:56,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:56,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:39:56,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:56,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:39:56,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:39:56,144 INFO L87 Difference]: Start difference. First operand 6758 states and 21370 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:56,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:56,510 INFO L93 Difference]: Finished difference Result 11222 states and 35408 transitions. [2022-11-03 01:39:56,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:39:56,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 01:39:56,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:56,547 INFO L225 Difference]: With dead ends: 11222 [2022-11-03 01:39:56,547 INFO L226 Difference]: Without dead ends: 11222 [2022-11-03 01:39:56,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:39:56,548 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 79 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:56,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 17 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:39:56,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11222 states. [2022-11-03 01:39:56,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11222 to 6846. [2022-11-03 01:39:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6846 states, 6811 states have (on average 3.181030685655557) internal successors, (21666), 6845 states have internal predecessors, (21666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6846 states to 6846 states and 21666 transitions. [2022-11-03 01:39:56,779 INFO L78 Accepts]: Start accepts. Automaton has 6846 states and 21666 transitions. Word has length 13 [2022-11-03 01:39:56,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:56,779 INFO L495 AbstractCegarLoop]: Abstraction has 6846 states and 21666 transitions. [2022-11-03 01:39:56,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand 6846 states and 21666 transitions. [2022-11-03 01:39:56,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:39:56,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:56,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:56,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 01:39:56,782 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:56,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:56,783 INFO L85 PathProgramCache]: Analyzing trace with hash -358083666, now seen corresponding path program 2 times [2022-11-03 01:39:56,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:56,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36575605] [2022-11-03 01:39:56,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:56,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:57,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:57,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36575605] [2022-11-03 01:39:57,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36575605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:57,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:57,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:39:57,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344969275] [2022-11-03 01:39:57,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:57,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:39:57,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:57,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:39:57,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:39:57,099 INFO L87 Difference]: Start difference. First operand 6846 states and 21666 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:57,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:57,489 INFO L93 Difference]: Finished difference Result 9986 states and 31532 transitions. [2022-11-03 01:39:57,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:39:57,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 01:39:57,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:57,515 INFO L225 Difference]: With dead ends: 9986 [2022-11-03 01:39:57,515 INFO L226 Difference]: Without dead ends: 9986 [2022-11-03 01:39:57,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:39:57,516 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 76 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:57,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 20 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:39:57,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2022-11-03 01:39:57,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 6744. [2022-11-03 01:39:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6744 states, 6709 states have (on average 3.175585035027575) internal successors, (21305), 6743 states have internal predecessors, (21305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:57,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 21305 transitions. [2022-11-03 01:39:57,801 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 21305 transitions. Word has length 13 [2022-11-03 01:39:57,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:57,801 INFO L495 AbstractCegarLoop]: Abstraction has 6744 states and 21305 transitions. [2022-11-03 01:39:57,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:57,802 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 21305 transitions. [2022-11-03 01:39:57,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:39:57,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:57,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:57,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 01:39:57,805 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:57,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:57,806 INFO L85 PathProgramCache]: Analyzing trace with hash -358138536, now seen corresponding path program 3 times [2022-11-03 01:39:57,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:57,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747887321] [2022-11-03 01:39:57,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:57,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:58,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:58,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:58,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747887321] [2022-11-03 01:39:58,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747887321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:58,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:58,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:39:58,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231744031] [2022-11-03 01:39:58,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:58,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:39:58,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:58,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:39:58,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:39:58,064 INFO L87 Difference]: Start difference. First operand 6744 states and 21305 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:58,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:58,427 INFO L93 Difference]: Finished difference Result 8766 states and 28107 transitions. [2022-11-03 01:39:58,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:39:58,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 01:39:58,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:58,450 INFO L225 Difference]: With dead ends: 8766 [2022-11-03 01:39:58,450 INFO L226 Difference]: Without dead ends: 8766 [2022-11-03 01:39:58,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:39:58,451 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 58 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:58,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 23 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:39:58,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8766 states. [2022-11-03 01:39:58,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8766 to 6926. [2022-11-03 01:39:58,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6926 states, 6891 states have (on average 3.1774778696850965) internal successors, (21896), 6925 states have internal predecessors, (21896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6926 states to 6926 states and 21896 transitions. [2022-11-03 01:39:58,658 INFO L78 Accepts]: Start accepts. Automaton has 6926 states and 21896 transitions. Word has length 13 [2022-11-03 01:39:58,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:58,658 INFO L495 AbstractCegarLoop]: Abstraction has 6926 states and 21896 transitions. [2022-11-03 01:39:58,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:58,659 INFO L276 IsEmpty]: Start isEmpty. Operand 6926 states and 21896 transitions. [2022-11-03 01:39:58,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:39:58,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:58,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:58,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 01:39:58,667 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:58,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:58,667 INFO L85 PathProgramCache]: Analyzing trace with hash -348656256, now seen corresponding path program 4 times [2022-11-03 01:39:58,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:58,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625817054] [2022-11-03 01:39:58,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:58,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:59,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:59,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:59,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625817054] [2022-11-03 01:39:59,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625817054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:59,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:59,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:39:59,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126390657] [2022-11-03 01:39:59,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:59,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:39:59,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:59,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:39:59,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:39:59,074 INFO L87 Difference]: Start difference. First operand 6926 states and 21896 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:59,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:59,557 INFO L93 Difference]: Finished difference Result 7752 states and 24625 transitions. [2022-11-03 01:39:59,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:39:59,557 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 01:39:59,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:59,584 INFO L225 Difference]: With dead ends: 7752 [2022-11-03 01:39:59,584 INFO L226 Difference]: Without dead ends: 7752 [2022-11-03 01:39:59,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:39:59,585 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 124 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:59,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 38 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:39:59,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7752 states. [2022-11-03 01:39:59,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7752 to 6950. [2022-11-03 01:39:59,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6950 states, 6915 states have (on average 3.178018799710774) internal successors, (21976), 6949 states have internal predecessors, (21976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:59,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6950 states to 6950 states and 21976 transitions. [2022-11-03 01:39:59,780 INFO L78 Accepts]: Start accepts. Automaton has 6950 states and 21976 transitions. Word has length 13 [2022-11-03 01:39:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:59,781 INFO L495 AbstractCegarLoop]: Abstraction has 6950 states and 21976 transitions. [2022-11-03 01:39:59,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:39:59,781 INFO L276 IsEmpty]: Start isEmpty. Operand 6950 states and 21976 transitions. [2022-11-03 01:39:59,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:39:59,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:59,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:59,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 01:39:59,784 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:39:59,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:59,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1798849208, now seen corresponding path program 1 times [2022-11-03 01:39:59,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:59,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252646999] [2022-11-03 01:39:59,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:59,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:00,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:00,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:00,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252646999] [2022-11-03 01:40:00,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252646999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:00,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:00,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:40:00,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390666031] [2022-11-03 01:40:00,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:00,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:40:00,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:00,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:40:00,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:40:00,093 INFO L87 Difference]: Start difference. First operand 6950 states and 21976 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:00,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:00,447 INFO L93 Difference]: Finished difference Result 10714 states and 33740 transitions. [2022-11-03 01:40:00,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:40:00,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 01:40:00,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:00,489 INFO L225 Difference]: With dead ends: 10714 [2022-11-03 01:40:00,489 INFO L226 Difference]: Without dead ends: 10714 [2022-11-03 01:40:00,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:40:00,490 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 80 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:00,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 18 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:40:00,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10714 states. [2022-11-03 01:40:00,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10714 to 6902. [2022-11-03 01:40:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6902 states, 6867 states have (on average 3.1766419105868646) internal successors, (21814), 6901 states have internal predecessors, (21814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:00,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6902 states to 6902 states and 21814 transitions. [2022-11-03 01:40:00,717 INFO L78 Accepts]: Start accepts. Automaton has 6902 states and 21814 transitions. Word has length 13 [2022-11-03 01:40:00,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:00,718 INFO L495 AbstractCegarLoop]: Abstraction has 6902 states and 21814 transitions. [2022-11-03 01:40:00,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:00,718 INFO L276 IsEmpty]: Start isEmpty. Operand 6902 states and 21814 transitions. [2022-11-03 01:40:00,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:40:00,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:00,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:00,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 01:40:00,722 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:00,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:00,722 INFO L85 PathProgramCache]: Analyzing trace with hash -277349516, now seen corresponding path program 1 times [2022-11-03 01:40:00,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:00,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058259218] [2022-11-03 01:40:00,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:00,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:01,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:01,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058259218] [2022-11-03 01:40:01,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058259218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:01,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:01,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:40:01,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299124567] [2022-11-03 01:40:01,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:01,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:01,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:01,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:01,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:01,042 INFO L87 Difference]: Start difference. First operand 6902 states and 21814 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:01,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:01,589 INFO L93 Difference]: Finished difference Result 11076 states and 35394 transitions. [2022-11-03 01:40:01,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:40:01,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:40:01,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:01,623 INFO L225 Difference]: With dead ends: 11076 [2022-11-03 01:40:01,623 INFO L226 Difference]: Without dead ends: 11076 [2022-11-03 01:40:01,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:40:01,624 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 140 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:01,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 30 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:40:01,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11076 states. [2022-11-03 01:40:01,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11076 to 6938. [2022-11-03 01:40:01,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6938 states, 6903 states have (on average 3.1774590757641605) internal successors, (21934), 6937 states have internal predecessors, (21934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:01,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6938 states to 6938 states and 21934 transitions. [2022-11-03 01:40:01,872 INFO L78 Accepts]: Start accepts. Automaton has 6938 states and 21934 transitions. Word has length 14 [2022-11-03 01:40:01,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:01,872 INFO L495 AbstractCegarLoop]: Abstraction has 6938 states and 21934 transitions. [2022-11-03 01:40:01,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:01,873 INFO L276 IsEmpty]: Start isEmpty. Operand 6938 states and 21934 transitions. [2022-11-03 01:40:01,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:40:01,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:01,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:01,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 01:40:01,877 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:01,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:01,878 INFO L85 PathProgramCache]: Analyzing trace with hash -277339286, now seen corresponding path program 2 times [2022-11-03 01:40:01,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:01,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925110984] [2022-11-03 01:40:01,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:01,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:02,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:02,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:02,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925110984] [2022-11-03 01:40:02,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925110984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:02,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:02,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:40:02,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646911116] [2022-11-03 01:40:02,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:02,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:40:02,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:02,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:40:02,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:40:02,242 INFO L87 Difference]: Start difference. First operand 6938 states and 21934 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:02,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:02,643 INFO L93 Difference]: Finished difference Result 10492 states and 32997 transitions. [2022-11-03 01:40:02,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:40:02,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:40:02,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:02,683 INFO L225 Difference]: With dead ends: 10492 [2022-11-03 01:40:02,684 INFO L226 Difference]: Without dead ends: 10492 [2022-11-03 01:40:02,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:40:02,686 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 149 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:02,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 21 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:40:02,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10492 states. [2022-11-03 01:40:02,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10492 to 6928. [2022-11-03 01:40:02,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6928 states, 6893 states have (on average 3.1716233860438128) internal successors, (21862), 6927 states have internal predecessors, (21862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:02,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6928 states to 6928 states and 21862 transitions. [2022-11-03 01:40:02,949 INFO L78 Accepts]: Start accepts. Automaton has 6928 states and 21862 transitions. Word has length 14 [2022-11-03 01:40:02,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:02,950 INFO L495 AbstractCegarLoop]: Abstraction has 6928 states and 21862 transitions. [2022-11-03 01:40:02,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:02,950 INFO L276 IsEmpty]: Start isEmpty. Operand 6928 states and 21862 transitions. [2022-11-03 01:40:02,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:40:02,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:02,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:02,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 01:40:02,955 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:02,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:02,956 INFO L85 PathProgramCache]: Analyzing trace with hash -493373516, now seen corresponding path program 1 times [2022-11-03 01:40:02,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:02,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963047664] [2022-11-03 01:40:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:02,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:03,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:03,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:03,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963047664] [2022-11-03 01:40:03,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963047664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:03,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:03,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:40:03,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276135585] [2022-11-03 01:40:03,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:03,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:40:03,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:03,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:40:03,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:40:03,355 INFO L87 Difference]: Start difference. First operand 6928 states and 21862 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:03,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:03,910 INFO L93 Difference]: Finished difference Result 13512 states and 42303 transitions. [2022-11-03 01:40:03,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:40:03,911 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:40:03,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:03,954 INFO L225 Difference]: With dead ends: 13512 [2022-11-03 01:40:03,954 INFO L226 Difference]: Without dead ends: 13512 [2022-11-03 01:40:03,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:40:03,954 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 159 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:03,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 27 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:40:03,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13512 states. [2022-11-03 01:40:04,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13512 to 6832. [2022-11-03 01:40:04,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6832 states, 6797 states have (on average 3.1693394144475504) internal successors, (21542), 6831 states have internal predecessors, (21542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:04,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 21542 transitions. [2022-11-03 01:40:04,215 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 21542 transitions. Word has length 14 [2022-11-03 01:40:04,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:04,216 INFO L495 AbstractCegarLoop]: Abstraction has 6832 states and 21542 transitions. [2022-11-03 01:40:04,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:04,216 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 21542 transitions. [2022-11-03 01:40:04,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:40:04,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:04,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:04,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 01:40:04,219 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:04,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash -451962478, now seen corresponding path program 3 times [2022-11-03 01:40:04,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:04,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593902394] [2022-11-03 01:40:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:04,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:04,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:04,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593902394] [2022-11-03 01:40:04,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593902394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:04,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:04,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:40:04,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131717430] [2022-11-03 01:40:04,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:04,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:04,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:04,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:04,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:04,511 INFO L87 Difference]: Start difference. First operand 6832 states and 21542 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:05,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:05,149 INFO L93 Difference]: Finished difference Result 13190 states and 41723 transitions. [2022-11-03 01:40:05,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:40:05,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:40:05,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:05,204 INFO L225 Difference]: With dead ends: 13190 [2022-11-03 01:40:05,204 INFO L226 Difference]: Without dead ends: 13190 [2022-11-03 01:40:05,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:40:05,205 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 182 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:05,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 40 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:40:05,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13190 states. [2022-11-03 01:40:05,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13190 to 6832. [2022-11-03 01:40:05,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6832 states, 6797 states have (on average 3.1693394144475504) internal successors, (21542), 6831 states have internal predecessors, (21542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:05,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 21542 transitions. [2022-11-03 01:40:05,508 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 21542 transitions. Word has length 14 [2022-11-03 01:40:05,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:05,508 INFO L495 AbstractCegarLoop]: Abstraction has 6832 states and 21542 transitions. [2022-11-03 01:40:05,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:05,509 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 21542 transitions. [2022-11-03 01:40:05,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:40:05,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:05,512 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:05,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-03 01:40:05,513 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:05,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:05,513 INFO L85 PathProgramCache]: Analyzing trace with hash -451945242, now seen corresponding path program 2 times [2022-11-03 01:40:05,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:05,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058864803] [2022-11-03 01:40:05,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:05,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:05,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:05,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058864803] [2022-11-03 01:40:05,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058864803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:05,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:05,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:40:05,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900399231] [2022-11-03 01:40:05,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:05,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:40:05,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:05,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:40:05,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:40:05,990 INFO L87 Difference]: Start difference. First operand 6832 states and 21542 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:06,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:06,813 INFO L93 Difference]: Finished difference Result 19216 states and 60251 transitions. [2022-11-03 01:40:06,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:40:06,814 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:40:06,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:06,892 INFO L225 Difference]: With dead ends: 19216 [2022-11-03 01:40:06,892 INFO L226 Difference]: Without dead ends: 19216 [2022-11-03 01:40:06,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:40:06,893 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 565 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:06,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 27 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:40:06,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19216 states. [2022-11-03 01:40:07,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19216 to 6248. [2022-11-03 01:40:07,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6248 states, 6215 states have (on average 3.174416733708769) internal successors, (19729), 6247 states have internal predecessors, (19729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:07,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6248 states to 6248 states and 19729 transitions. [2022-11-03 01:40:07,166 INFO L78 Accepts]: Start accepts. Automaton has 6248 states and 19729 transitions. Word has length 14 [2022-11-03 01:40:07,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:07,166 INFO L495 AbstractCegarLoop]: Abstraction has 6248 states and 19729 transitions. [2022-11-03 01:40:07,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:07,166 INFO L276 IsEmpty]: Start isEmpty. Operand 6248 states and 19729 transitions. [2022-11-03 01:40:07,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:40:07,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:07,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:07,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-03 01:40:07,169 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:07,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:07,169 INFO L85 PathProgramCache]: Analyzing trace with hash -453269562, now seen corresponding path program 3 times [2022-11-03 01:40:07,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:07,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592428586] [2022-11-03 01:40:07,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:07,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:07,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:07,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592428586] [2022-11-03 01:40:07,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592428586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:07,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:07,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:40:07,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929771923] [2022-11-03 01:40:07,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:07,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:07,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:07,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:07,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:07,494 INFO L87 Difference]: Start difference. First operand 6248 states and 19729 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:07,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:07,890 INFO L93 Difference]: Finished difference Result 9786 states and 30718 transitions. [2022-11-03 01:40:07,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:40:07,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:40:07,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:07,920 INFO L225 Difference]: With dead ends: 9786 [2022-11-03 01:40:07,920 INFO L226 Difference]: Without dead ends: 9786 [2022-11-03 01:40:07,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:07,921 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 87 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:07,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 23 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:40:07,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9786 states. [2022-11-03 01:40:08,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9786 to 5986. [2022-11-03 01:40:08,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5986 states, 5953 states have (on average 3.1605912985049556) internal successors, (18815), 5985 states have internal predecessors, (18815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:08,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5986 states to 5986 states and 18815 transitions. [2022-11-03 01:40:08,090 INFO L78 Accepts]: Start accepts. Automaton has 5986 states and 18815 transitions. Word has length 14 [2022-11-03 01:40:08,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:08,090 INFO L495 AbstractCegarLoop]: Abstraction has 5986 states and 18815 transitions. [2022-11-03 01:40:08,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:08,091 INFO L276 IsEmpty]: Start isEmpty. Operand 5986 states and 18815 transitions. [2022-11-03 01:40:08,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:40:08,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:08,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:08,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-03 01:40:08,094 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:08,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:08,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1417629064, now seen corresponding path program 1 times [2022-11-03 01:40:08,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:08,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365158945] [2022-11-03 01:40:08,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:08,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:08,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:08,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365158945] [2022-11-03 01:40:08,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365158945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:08,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:08,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:40:08,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835986393] [2022-11-03 01:40:08,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:08,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:40:08,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:08,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:40:08,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:40:08,349 INFO L87 Difference]: Start difference. First operand 5986 states and 18815 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:08,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:08,694 INFO L93 Difference]: Finished difference Result 6602 states and 20887 transitions. [2022-11-03 01:40:08,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:40:08,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:40:08,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:08,718 INFO L225 Difference]: With dead ends: 6602 [2022-11-03 01:40:08,718 INFO L226 Difference]: Without dead ends: 6602 [2022-11-03 01:40:08,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:40:08,719 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 49 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:08,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 27 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:40:08,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6602 states. [2022-11-03 01:40:08,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6602 to 6102. [2022-11-03 01:40:08,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6102 states, 6069 states have (on average 3.1677376833086175) internal successors, (19225), 6101 states have internal predecessors, (19225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6102 states to 6102 states and 19225 transitions. [2022-11-03 01:40:08,951 INFO L78 Accepts]: Start accepts. Automaton has 6102 states and 19225 transitions. Word has length 14 [2022-11-03 01:40:08,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:08,952 INFO L495 AbstractCegarLoop]: Abstraction has 6102 states and 19225 transitions. [2022-11-03 01:40:08,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:08,952 INFO L276 IsEmpty]: Start isEmpty. Operand 6102 states and 19225 transitions. [2022-11-03 01:40:08,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:40:08,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:08,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:08,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-03 01:40:08,958 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:08,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:08,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1319420102, now seen corresponding path program 4 times [2022-11-03 01:40:08,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:08,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233941146] [2022-11-03 01:40:08,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:08,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:09,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:09,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:09,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233941146] [2022-11-03 01:40:09,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233941146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:09,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:09,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:40:09,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183333681] [2022-11-03 01:40:09,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:09,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:09,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:09,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:09,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:09,205 INFO L87 Difference]: Start difference. First operand 6102 states and 19225 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:09,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:09,652 INFO L93 Difference]: Finished difference Result 10374 states and 32577 transitions. [2022-11-03 01:40:09,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:40:09,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:40:09,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:09,685 INFO L225 Difference]: With dead ends: 10374 [2022-11-03 01:40:09,685 INFO L226 Difference]: Without dead ends: 10374 [2022-11-03 01:40:09,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:09,685 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 110 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:09,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 29 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:40:09,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10374 states. [2022-11-03 01:40:09,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10374 to 5714. [2022-11-03 01:40:09,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5714 states, 5683 states have (on average 3.1537920112616575) internal successors, (17923), 5713 states have internal predecessors, (17923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 17923 transitions. [2022-11-03 01:40:09,833 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 17923 transitions. Word has length 14 [2022-11-03 01:40:09,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:09,833 INFO L495 AbstractCegarLoop]: Abstraction has 5714 states and 17923 transitions. [2022-11-03 01:40:09,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:09,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 17923 transitions. [2022-11-03 01:40:09,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:40:09,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:09,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:09,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-03 01:40:09,836 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:09,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:09,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1707439106, now seen corresponding path program 2 times [2022-11-03 01:40:09,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:09,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547178726] [2022-11-03 01:40:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:09,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:10,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:10,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547178726] [2022-11-03 01:40:10,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547178726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:10,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:10,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:40:10,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170897331] [2022-11-03 01:40:10,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:10,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:40:10,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:10,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:40:10,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:40:10,073 INFO L87 Difference]: Start difference. First operand 5714 states and 17923 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:10,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:10,470 INFO L93 Difference]: Finished difference Result 8786 states and 27891 transitions. [2022-11-03 01:40:10,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:40:10,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:40:10,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:10,496 INFO L225 Difference]: With dead ends: 8786 [2022-11-03 01:40:10,496 INFO L226 Difference]: Without dead ends: 8786 [2022-11-03 01:40:10,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:40:10,497 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 94 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:10,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 26 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:40:10,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8786 states. [2022-11-03 01:40:10,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8786 to 5854. [2022-11-03 01:40:10,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5854 states, 5823 states have (on average 3.158681092220505) internal successors, (18393), 5853 states have internal predecessors, (18393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:10,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5854 states to 5854 states and 18393 transitions. [2022-11-03 01:40:10,667 INFO L78 Accepts]: Start accepts. Automaton has 5854 states and 18393 transitions. Word has length 14 [2022-11-03 01:40:10,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:10,667 INFO L495 AbstractCegarLoop]: Abstraction has 5854 states and 18393 transitions. [2022-11-03 01:40:10,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:10,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5854 states and 18393 transitions. [2022-11-03 01:40:10,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:40:10,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:10,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:10,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-03 01:40:10,671 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:10,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:10,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1784309186, now seen corresponding path program 3 times [2022-11-03 01:40:10,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:10,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864537697] [2022-11-03 01:40:10,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:10,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:10,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:10,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:10,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864537697] [2022-11-03 01:40:10,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864537697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:10,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:10,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:40:10,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899628741] [2022-11-03 01:40:10,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:10,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:10,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:10,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:10,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:10,924 INFO L87 Difference]: Start difference. First operand 5854 states and 18393 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:11,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:11,480 INFO L93 Difference]: Finished difference Result 9878 states and 31347 transitions. [2022-11-03 01:40:11,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:40:11,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:40:11,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:11,503 INFO L225 Difference]: With dead ends: 9878 [2022-11-03 01:40:11,503 INFO L226 Difference]: Without dead ends: 9878 [2022-11-03 01:40:11,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:11,504 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 100 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:11,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 47 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:40:11,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9878 states. [2022-11-03 01:40:11,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9878 to 5864. [2022-11-03 01:40:11,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5864 states, 5833 states have (on average 3.159266243785359) internal successors, (18428), 5863 states have internal predecessors, (18428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:11,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 18428 transitions. [2022-11-03 01:40:11,633 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 18428 transitions. Word has length 14 [2022-11-03 01:40:11,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:11,633 INFO L495 AbstractCegarLoop]: Abstraction has 5864 states and 18428 transitions. [2022-11-03 01:40:11,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:11,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 18428 transitions. [2022-11-03 01:40:11,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:40:11,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:11,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:11,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-03 01:40:11,635 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:11,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:11,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1782608216, now seen corresponding path program 4 times [2022-11-03 01:40:11,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:11,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458909684] [2022-11-03 01:40:11,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:11,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:11,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:11,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458909684] [2022-11-03 01:40:11,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458909684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:11,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:11,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:40:11,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2954046] [2022-11-03 01:40:11,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:11,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:11,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:11,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:11,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:11,905 INFO L87 Difference]: Start difference. First operand 5864 states and 18428 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:12,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:12,276 INFO L93 Difference]: Finished difference Result 10718 states and 33611 transitions. [2022-11-03 01:40:12,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:40:12,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:40:12,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:12,302 INFO L225 Difference]: With dead ends: 10718 [2022-11-03 01:40:12,302 INFO L226 Difference]: Without dead ends: 10718 [2022-11-03 01:40:12,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:12,303 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 151 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:12,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 21 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:40:12,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10718 states. [2022-11-03 01:40:12,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10718 to 5868. [2022-11-03 01:40:12,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5868 states, 5837 states have (on average 3.159499743018674) internal successors, (18442), 5867 states have internal predecessors, (18442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:12,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5868 states to 5868 states and 18442 transitions. [2022-11-03 01:40:12,442 INFO L78 Accepts]: Start accepts. Automaton has 5868 states and 18442 transitions. Word has length 14 [2022-11-03 01:40:12,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:12,442 INFO L495 AbstractCegarLoop]: Abstraction has 5868 states and 18442 transitions. [2022-11-03 01:40:12,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:12,442 INFO L276 IsEmpty]: Start isEmpty. Operand 5868 states and 18442 transitions. [2022-11-03 01:40:12,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:40:12,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:12,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:12,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-03 01:40:12,444 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:12,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:12,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1782627746, now seen corresponding path program 5 times [2022-11-03 01:40:12,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:12,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452577585] [2022-11-03 01:40:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:12,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:12,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:12,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452577585] [2022-11-03 01:40:12,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452577585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:12,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:12,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:40:12,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949579314] [2022-11-03 01:40:12,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:12,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:12,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:12,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:12,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:12,720 INFO L87 Difference]: Start difference. First operand 5868 states and 18442 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:13,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:13,105 INFO L93 Difference]: Finished difference Result 7446 states and 23661 transitions. [2022-11-03 01:40:13,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:40:13,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:40:13,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:13,130 INFO L225 Difference]: With dead ends: 7446 [2022-11-03 01:40:13,130 INFO L226 Difference]: Without dead ends: 7446 [2022-11-03 01:40:13,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:13,131 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 66 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:13,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 28 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:40:13,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7446 states. [2022-11-03 01:40:13,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7446 to 5836. [2022-11-03 01:40:13,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5836 states, 5805 states have (on average 3.156244616709733) internal successors, (18322), 5835 states have internal predecessors, (18322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:13,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5836 states to 5836 states and 18322 transitions. [2022-11-03 01:40:13,289 INFO L78 Accepts]: Start accepts. Automaton has 5836 states and 18322 transitions. Word has length 14 [2022-11-03 01:40:13,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:13,289 INFO L495 AbstractCegarLoop]: Abstraction has 5836 states and 18322 transitions. [2022-11-03 01:40:13,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:13,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5836 states and 18322 transitions. [2022-11-03 01:40:13,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:40:13,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:13,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:13,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-03 01:40:13,293 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:13,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:13,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2076558896, now seen corresponding path program 6 times [2022-11-03 01:40:13,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:13,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514389374] [2022-11-03 01:40:13,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:13,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:13,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:13,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514389374] [2022-11-03 01:40:13,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514389374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:13,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:13,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:40:13,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348921574] [2022-11-03 01:40:13,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:13,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:40:13,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:13,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:40:13,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:40:13,559 INFO L87 Difference]: Start difference. First operand 5836 states and 18322 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:14,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:14,162 INFO L93 Difference]: Finished difference Result 11318 states and 35465 transitions. [2022-11-03 01:40:14,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:40:14,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:40:14,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:14,204 INFO L225 Difference]: With dead ends: 11318 [2022-11-03 01:40:14,204 INFO L226 Difference]: Without dead ends: 11318 [2022-11-03 01:40:14,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:40:14,205 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 166 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:14,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 52 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:40:14,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11318 states. [2022-11-03 01:40:14,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11318 to 5824. [2022-11-03 01:40:14,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5824 states, 5793 states have (on average 3.1551872950112205) internal successors, (18278), 5823 states have internal predecessors, (18278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:14,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5824 states to 5824 states and 18278 transitions. [2022-11-03 01:40:14,374 INFO L78 Accepts]: Start accepts. Automaton has 5824 states and 18278 transitions. Word has length 14 [2022-11-03 01:40:14,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:14,374 INFO L495 AbstractCegarLoop]: Abstraction has 5824 states and 18278 transitions. [2022-11-03 01:40:14,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:14,374 INFO L276 IsEmpty]: Start isEmpty. Operand 5824 states and 18278 transitions. [2022-11-03 01:40:14,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:40:14,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:14,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:14,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-03 01:40:14,377 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:14,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:14,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2073366188, now seen corresponding path program 4 times [2022-11-03 01:40:14,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:14,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688845721] [2022-11-03 01:40:14,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:14,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:14,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:14,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:14,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688845721] [2022-11-03 01:40:14,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688845721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:14,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:14,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:40:14,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774294119] [2022-11-03 01:40:14,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:14,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:40:14,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:14,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:40:14,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:40:14,645 INFO L87 Difference]: Start difference. First operand 5824 states and 18278 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:15,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:15,225 INFO L93 Difference]: Finished difference Result 7690 states and 23973 transitions. [2022-11-03 01:40:15,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:40:15,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:40:15,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:15,243 INFO L225 Difference]: With dead ends: 7690 [2022-11-03 01:40:15,243 INFO L226 Difference]: Without dead ends: 7690 [2022-11-03 01:40:15,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:40:15,243 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 110 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:15,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 48 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:40:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7690 states. [2022-11-03 01:40:15,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7690 to 5622. [2022-11-03 01:40:15,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5622 states, 5593 states have (on average 3.1603790452351155) internal successors, (17676), 5621 states have internal predecessors, (17676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5622 states to 5622 states and 17676 transitions. [2022-11-03 01:40:15,419 INFO L78 Accepts]: Start accepts. Automaton has 5622 states and 17676 transitions. Word has length 14 [2022-11-03 01:40:15,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:15,419 INFO L495 AbstractCegarLoop]: Abstraction has 5622 states and 17676 transitions. [2022-11-03 01:40:15,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:15,419 INFO L276 IsEmpty]: Start isEmpty. Operand 5622 states and 17676 transitions. [2022-11-03 01:40:15,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:40:15,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:15,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:15,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-03 01:40:15,421 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:15,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:15,422 INFO L85 PathProgramCache]: Analyzing trace with hash 70273718, now seen corresponding path program 7 times [2022-11-03 01:40:15,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:15,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410132090] [2022-11-03 01:40:15,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:15,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:15,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:15,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410132090] [2022-11-03 01:40:15,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410132090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:15,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:15,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:40:15,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878002038] [2022-11-03 01:40:15,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:15,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:15,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:15,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:15,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:15,666 INFO L87 Difference]: Start difference. First operand 5622 states and 17676 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:16,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:16,146 INFO L93 Difference]: Finished difference Result 7214 states and 22641 transitions. [2022-11-03 01:40:16,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:40:16,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:40:16,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:16,163 INFO L225 Difference]: With dead ends: 7214 [2022-11-03 01:40:16,163 INFO L226 Difference]: Without dead ends: 7214 [2022-11-03 01:40:16,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:16,164 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 77 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:16,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 43 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:40:16,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7214 states. [2022-11-03 01:40:16,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7214 to 5270. [2022-11-03 01:40:16,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 5241 states have (on average 3.1413852318259874) internal successors, (16464), 5269 states have internal predecessors, (16464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:16,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 16464 transitions. [2022-11-03 01:40:16,274 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 16464 transitions. Word has length 14 [2022-11-03 01:40:16,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:16,274 INFO L495 AbstractCegarLoop]: Abstraction has 5270 states and 16464 transitions. [2022-11-03 01:40:16,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:16,274 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 16464 transitions. [2022-11-03 01:40:16,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 01:40:16,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:16,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:16,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-03 01:40:16,281 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:16,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:16,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1861568172, now seen corresponding path program 1 times [2022-11-03 01:40:16,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:16,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631802911] [2022-11-03 01:40:16,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:16,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:16,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:16,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631802911] [2022-11-03 01:40:16,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631802911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:16,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:16,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:40:16,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165886142] [2022-11-03 01:40:16,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:16,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:40:16,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:16,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:40:16,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:16,332 INFO L87 Difference]: Start difference. First operand 5270 states and 16464 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:16,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:16,433 INFO L93 Difference]: Finished difference Result 4898 states and 15360 transitions. [2022-11-03 01:40:16,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:40:16,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 [2022-11-03 01:40:16,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:16,448 INFO L225 Difference]: With dead ends: 4898 [2022-11-03 01:40:16,448 INFO L226 Difference]: Without dead ends: 4898 [2022-11-03 01:40:16,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:16,449 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:16,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:40:16,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2022-11-03 01:40:16,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 4898. [2022-11-03 01:40:16,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4898 states, 4885 states have (on average 3.1443193449334697) internal successors, (15360), 4897 states have internal predecessors, (15360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:16,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4898 states to 4898 states and 15360 transitions. [2022-11-03 01:40:16,559 INFO L78 Accepts]: Start accepts. Automaton has 4898 states and 15360 transitions. Word has length 20 [2022-11-03 01:40:16,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:16,559 INFO L495 AbstractCegarLoop]: Abstraction has 4898 states and 15360 transitions. [2022-11-03 01:40:16,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:16,559 INFO L276 IsEmpty]: Start isEmpty. Operand 4898 states and 15360 transitions. [2022-11-03 01:40:16,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:40:16,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:16,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:16,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-03 01:40:16,565 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:16,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:16,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1874556266, now seen corresponding path program 1 times [2022-11-03 01:40:16,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:16,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935544439] [2022-11-03 01:40:16,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:16,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:16,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:16,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:16,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935544439] [2022-11-03 01:40:16,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935544439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:16,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:16,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:40:16,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598913546] [2022-11-03 01:40:16,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:16,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:40:16,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:16,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:40:16,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:40:16,658 INFO L87 Difference]: Start difference. First operand 4898 states and 15360 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2022-11-03 01:40:16,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:16,898 INFO L93 Difference]: Finished difference Result 5400 states and 16511 transitions. [2022-11-03 01:40:16,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:40:16,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 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) Word has length 21 [2022-11-03 01:40:16,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:16,913 INFO L225 Difference]: With dead ends: 5400 [2022-11-03 01:40:16,914 INFO L226 Difference]: Without dead ends: 5218 [2022-11-03 01:40:16,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:16,915 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 145 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:16,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 0 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:40:16,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5218 states. [2022-11-03 01:40:17,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5218 to 4928. [2022-11-03 01:40:17,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4918 states have (on average 3.1187474583163888) internal successors, (15338), 4927 states have internal predecessors, (15338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:17,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 15338 transitions. [2022-11-03 01:40:17,027 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 15338 transitions. Word has length 21 [2022-11-03 01:40:17,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:17,027 INFO L495 AbstractCegarLoop]: Abstraction has 4928 states and 15338 transitions. [2022-11-03 01:40:17,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2022-11-03 01:40:17,027 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 15338 transitions. [2022-11-03 01:40:17,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:40:17,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:17,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:17,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-03 01:40:17,034 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:17,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:17,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1874538406, now seen corresponding path program 1 times [2022-11-03 01:40:17,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:17,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430632785] [2022-11-03 01:40:17,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:17,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:17,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:17,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430632785] [2022-11-03 01:40:17,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430632785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:17,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:17,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:40:17,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258223072] [2022-11-03 01:40:17,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:17,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:40:17,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:17,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:40:17,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:40:17,121 INFO L87 Difference]: Start difference. First operand 4928 states and 15338 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2022-11-03 01:40:17,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:17,369 INFO L93 Difference]: Finished difference Result 5454 states and 16507 transitions. [2022-11-03 01:40:17,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:40:17,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 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) Word has length 21 [2022-11-03 01:40:17,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:17,381 INFO L225 Difference]: With dead ends: 5454 [2022-11-03 01:40:17,381 INFO L226 Difference]: Without dead ends: 5132 [2022-11-03 01:40:17,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:17,382 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 154 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:17,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 0 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:40:17,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5132 states. [2022-11-03 01:40:17,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5132 to 4786. [2022-11-03 01:40:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4786 states, 4778 states have (on average 3.1090414399330264) internal successors, (14855), 4785 states have internal predecessors, (14855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4786 states to 4786 states and 14855 transitions. [2022-11-03 01:40:17,468 INFO L78 Accepts]: Start accepts. Automaton has 4786 states and 14855 transitions. Word has length 21 [2022-11-03 01:40:17,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:17,468 INFO L495 AbstractCegarLoop]: Abstraction has 4786 states and 14855 transitions. [2022-11-03 01:40:17,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2022-11-03 01:40:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4786 states and 14855 transitions. [2022-11-03 01:40:17,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:40:17,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:17,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:17,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-03 01:40:17,473 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:17,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:17,473 INFO L85 PathProgramCache]: Analyzing trace with hash -714136171, now seen corresponding path program 1 times [2022-11-03 01:40:17,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:17,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572615563] [2022-11-03 01:40:17,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:17,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:17,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:17,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:17,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572615563] [2022-11-03 01:40:17,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572615563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:17,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:17,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:40:17,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382040863] [2022-11-03 01:40:17,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:17,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:17,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:17,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:17,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:17,774 INFO L87 Difference]: Start difference. First operand 4786 states and 14855 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-11-03 01:40:18,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:18,099 INFO L93 Difference]: Finished difference Result 5724 states and 17882 transitions. [2022-11-03 01:40:18,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:40:18,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) Word has length 21 [2022-11-03 01:40:18,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:18,115 INFO L225 Difference]: With dead ends: 5724 [2022-11-03 01:40:18,116 INFO L226 Difference]: Without dead ends: 5706 [2022-11-03 01:40:18,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:40:18,119 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 95 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:18,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 20 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:40:18,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5706 states. [2022-11-03 01:40:18,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5706 to 4522. [2022-11-03 01:40:18,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4522 states, 4515 states have (on average 3.1096345514950166) internal successors, (14040), 4521 states have internal predecessors, (14040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:18,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4522 states to 4522 states and 14040 transitions. [2022-11-03 01:40:18,242 INFO L78 Accepts]: Start accepts. Automaton has 4522 states and 14040 transitions. Word has length 21 [2022-11-03 01:40:18,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:18,243 INFO L495 AbstractCegarLoop]: Abstraction has 4522 states and 14040 transitions. [2022-11-03 01:40:18,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-11-03 01:40:18,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4522 states and 14040 transitions. [2022-11-03 01:40:18,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:40:18,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:18,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:18,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-03 01:40:18,250 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:18,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:18,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1307649176, now seen corresponding path program 1 times [2022-11-03 01:40:18,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:18,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055589584] [2022-11-03 01:40:18,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:18,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:18,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:18,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055589584] [2022-11-03 01:40:18,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055589584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:18,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:18,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:40:18,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438779452] [2022-11-03 01:40:18,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:18,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:40:18,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:18,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:40:18,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:18,318 INFO L87 Difference]: Start difference. First operand 4522 states and 14040 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2022-11-03 01:40:18,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:18,438 INFO L93 Difference]: Finished difference Result 4304 states and 13149 transitions. [2022-11-03 01:40:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:40:18,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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) Word has length 21 [2022-11-03 01:40:18,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:18,453 INFO L225 Difference]: With dead ends: 4304 [2022-11-03 01:40:18,454 INFO L226 Difference]: Without dead ends: 4304 [2022-11-03 01:40:18,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:18,455 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 26 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:18,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 8 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:40:18,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4304 states. [2022-11-03 01:40:18,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4304 to 4254. [2022-11-03 01:40:18,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4254 states, 4245 states have (on average 3.067137809187279) internal successors, (13020), 4253 states have internal predecessors, (13020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:18,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4254 states to 4254 states and 13020 transitions. [2022-11-03 01:40:18,556 INFO L78 Accepts]: Start accepts. Automaton has 4254 states and 13020 transitions. Word has length 21 [2022-11-03 01:40:18,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:18,556 INFO L495 AbstractCegarLoop]: Abstraction has 4254 states and 13020 transitions. [2022-11-03 01:40:18,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2022-11-03 01:40:18,556 INFO L276 IsEmpty]: Start isEmpty. Operand 4254 states and 13020 transitions. [2022-11-03 01:40:18,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:40:18,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:18,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:18,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-03 01:40:18,563 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:18,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:18,564 INFO L85 PathProgramCache]: Analyzing trace with hash 172000256, now seen corresponding path program 2 times [2022-11-03 01:40:18,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:18,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179379366] [2022-11-03 01:40:18,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:18,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:18,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:18,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179379366] [2022-11-03 01:40:18,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179379366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:18,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:18,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:40:18,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382552379] [2022-11-03 01:40:18,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:18,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:18,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:18,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:18,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:18,772 INFO L87 Difference]: Start difference. First operand 4254 states and 13020 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-11-03 01:40:19,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:19,102 INFO L93 Difference]: Finished difference Result 6982 states and 21412 transitions. [2022-11-03 01:40:19,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:40:19,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) Word has length 21 [2022-11-03 01:40:19,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:19,117 INFO L225 Difference]: With dead ends: 6982 [2022-11-03 01:40:19,117 INFO L226 Difference]: Without dead ends: 6972 [2022-11-03 01:40:19,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:19,117 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 82 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:19,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 36 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:40:19,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6972 states. [2022-11-03 01:40:19,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6972 to 4368. [2022-11-03 01:40:19,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4359 states have (on average 3.078917182840101) internal successors, (13421), 4367 states have internal predecessors, (13421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 13421 transitions. [2022-11-03 01:40:19,203 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 13421 transitions. Word has length 21 [2022-11-03 01:40:19,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:19,203 INFO L495 AbstractCegarLoop]: Abstraction has 4368 states and 13421 transitions. [2022-11-03 01:40:19,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-11-03 01:40:19,204 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 13421 transitions. [2022-11-03 01:40:19,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:40:19,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:19,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:19,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-03 01:40:19,209 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:19,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:19,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1522075538, now seen corresponding path program 1 times [2022-11-03 01:40:19,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:19,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011759942] [2022-11-03 01:40:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:19,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:19,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:19,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011759942] [2022-11-03 01:40:19,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011759942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:19,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:19,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:40:19,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293669499] [2022-11-03 01:40:19,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:19,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:40:19,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:19,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:40:19,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:40:19,778 INFO L87 Difference]: Start difference. First operand 4368 states and 13421 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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) [2022-11-03 01:40:20,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:20,256 INFO L93 Difference]: Finished difference Result 6650 states and 20209 transitions. [2022-11-03 01:40:20,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:40:20,256 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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) Word has length 21 [2022-11-03 01:40:20,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:20,274 INFO L225 Difference]: With dead ends: 6650 [2022-11-03 01:40:20,274 INFO L226 Difference]: Without dead ends: 6650 [2022-11-03 01:40:20,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:40:20,275 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 140 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:20,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 20 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:40:20,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6650 states. [2022-11-03 01:40:20,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6650 to 4312. [2022-11-03 01:40:20,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 4303 states have (on average 3.0766906809202883) internal successors, (13239), 4311 states have internal predecessors, (13239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:20,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 13239 transitions. [2022-11-03 01:40:20,382 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 13239 transitions. Word has length 21 [2022-11-03 01:40:20,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:20,382 INFO L495 AbstractCegarLoop]: Abstraction has 4312 states and 13239 transitions. [2022-11-03 01:40:20,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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) [2022-11-03 01:40:20,382 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 13239 transitions. [2022-11-03 01:40:20,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:40:20,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:20,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:20,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-03 01:40:20,387 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:20,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:20,387 INFO L85 PathProgramCache]: Analyzing trace with hash 431391416, now seen corresponding path program 2 times [2022-11-03 01:40:20,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:20,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554558584] [2022-11-03 01:40:20,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:20,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:20,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:20,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554558584] [2022-11-03 01:40:20,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554558584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:20,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:20,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:40:20,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605712711] [2022-11-03 01:40:20,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:20,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:40:20,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:20,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:40:20,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:20,461 INFO L87 Difference]: Start difference. First operand 4312 states and 13239 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2022-11-03 01:40:20,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:20,572 INFO L93 Difference]: Finished difference Result 4232 states and 12827 transitions. [2022-11-03 01:40:20,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:40:20,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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) Word has length 21 [2022-11-03 01:40:20,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:20,580 INFO L225 Difference]: With dead ends: 4232 [2022-11-03 01:40:20,580 INFO L226 Difference]: Without dead ends: 4232 [2022-11-03 01:40:20,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:20,581 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:20,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:40:20,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4232 states. [2022-11-03 01:40:20,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4232 to 4174. [2022-11-03 01:40:20,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4174 states, 4164 states have (on average 3.0405859750240154) internal successors, (12661), 4173 states have internal predecessors, (12661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:20,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4174 states to 4174 states and 12661 transitions. [2022-11-03 01:40:20,648 INFO L78 Accepts]: Start accepts. Automaton has 4174 states and 12661 transitions. Word has length 21 [2022-11-03 01:40:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:20,649 INFO L495 AbstractCegarLoop]: Abstraction has 4174 states and 12661 transitions. [2022-11-03 01:40:20,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2022-11-03 01:40:20,649 INFO L276 IsEmpty]: Start isEmpty. Operand 4174 states and 12661 transitions. [2022-11-03 01:40:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:40:20,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:20,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:20,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-03 01:40:20,654 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:20,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:20,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1106187140, now seen corresponding path program 1 times [2022-11-03 01:40:20,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:20,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804854942] [2022-11-03 01:40:20,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:20,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:20,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:20,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804854942] [2022-11-03 01:40:20,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804854942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:20,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:20,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:40:20,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929433714] [2022-11-03 01:40:20,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:20,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:40:20,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:20,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:40:20,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:40:20,970 INFO L87 Difference]: Start difference. First operand 4174 states and 12661 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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) [2022-11-03 01:40:21,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:21,505 INFO L93 Difference]: Finished difference Result 4668 states and 13983 transitions. [2022-11-03 01:40:21,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:40:21,506 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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) Word has length 21 [2022-11-03 01:40:21,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:21,517 INFO L225 Difference]: With dead ends: 4668 [2022-11-03 01:40:21,518 INFO L226 Difference]: Without dead ends: 4626 [2022-11-03 01:40:21,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:40:21,520 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 92 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:21,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 63 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:40:21,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4626 states. [2022-11-03 01:40:21,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4626 to 3830. [2022-11-03 01:40:21,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3830 states, 3822 states have (on average 3.043694400837258) internal successors, (11633), 3829 states have internal predecessors, (11633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:21,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3830 states to 3830 states and 11633 transitions. [2022-11-03 01:40:21,621 INFO L78 Accepts]: Start accepts. Automaton has 3830 states and 11633 transitions. Word has length 21 [2022-11-03 01:40:21,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:21,621 INFO L495 AbstractCegarLoop]: Abstraction has 3830 states and 11633 transitions. [2022-11-03 01:40:21,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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) [2022-11-03 01:40:21,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3830 states and 11633 transitions. [2022-11-03 01:40:21,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:40:21,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:21,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:21,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-03 01:40:21,628 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:21,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:21,628 INFO L85 PathProgramCache]: Analyzing trace with hash -437260924, now seen corresponding path program 3 times [2022-11-03 01:40:21,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:21,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996788566] [2022-11-03 01:40:21,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:21,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:21,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:21,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996788566] [2022-11-03 01:40:21,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996788566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:21,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:21,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:40:21,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148820585] [2022-11-03 01:40:21,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:21,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:40:21,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:21,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:40:21,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:40:21,977 INFO L87 Difference]: Start difference. First operand 3830 states and 11633 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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) [2022-11-03 01:40:22,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:22,519 INFO L93 Difference]: Finished difference Result 6332 states and 18947 transitions. [2022-11-03 01:40:22,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:40:22,519 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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) Word has length 21 [2022-11-03 01:40:22,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:22,531 INFO L225 Difference]: With dead ends: 6332 [2022-11-03 01:40:22,531 INFO L226 Difference]: Without dead ends: 6332 [2022-11-03 01:40:22,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:40:22,532 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 157 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:22,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 51 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:40:22,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2022-11-03 01:40:22,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 4220. [2022-11-03 01:40:22,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4220 states, 4212 states have (on average 3.028727445394112) internal successors, (12757), 4219 states have internal predecessors, (12757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:22,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4220 states to 4220 states and 12757 transitions. [2022-11-03 01:40:22,616 INFO L78 Accepts]: Start accepts. Automaton has 4220 states and 12757 transitions. Word has length 21 [2022-11-03 01:40:22,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:22,616 INFO L495 AbstractCegarLoop]: Abstraction has 4220 states and 12757 transitions. [2022-11-03 01:40:22,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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) [2022-11-03 01:40:22,616 INFO L276 IsEmpty]: Start isEmpty. Operand 4220 states and 12757 transitions. [2022-11-03 01:40:22,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:40:22,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:22,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:22,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-03 01:40:22,620 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:22,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:22,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1699348422, now seen corresponding path program 4 times [2022-11-03 01:40:22,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:22,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420058928] [2022-11-03 01:40:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:22,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:22,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:22,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:22,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420058928] [2022-11-03 01:40:22,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420058928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:22,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:22,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:40:22,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529877889] [2022-11-03 01:40:22,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:22,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:40:22,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:22,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:40:22,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:40:22,946 INFO L87 Difference]: Start difference. First operand 4220 states and 12757 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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) [2022-11-03 01:40:23,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:23,381 INFO L93 Difference]: Finished difference Result 7944 states and 24262 transitions. [2022-11-03 01:40:23,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:40:23,381 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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) Word has length 21 [2022-11-03 01:40:23,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:23,402 INFO L225 Difference]: With dead ends: 7944 [2022-11-03 01:40:23,402 INFO L226 Difference]: Without dead ends: 7944 [2022-11-03 01:40:23,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:40:23,403 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 173 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:23,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 41 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:40:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7944 states. [2022-11-03 01:40:23,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7944 to 4312. [2022-11-03 01:40:23,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 4304 states have (on average 3.0267193308550184) internal successors, (13027), 4311 states have internal predecessors, (13027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:23,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 13027 transitions. [2022-11-03 01:40:23,515 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 13027 transitions. Word has length 21 [2022-11-03 01:40:23,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:23,516 INFO L495 AbstractCegarLoop]: Abstraction has 4312 states and 13027 transitions. [2022-11-03 01:40:23,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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) [2022-11-03 01:40:23,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 13027 transitions. [2022-11-03 01:40:23,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:40:23,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:23,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:23,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-03 01:40:23,519 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:23,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:23,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2126108884, now seen corresponding path program 5 times [2022-11-03 01:40:23,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:23,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882625667] [2022-11-03 01:40:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:23,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:23,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:23,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:23,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882625667] [2022-11-03 01:40:23,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882625667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:23,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:23,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:40:23,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548466032] [2022-11-03 01:40:23,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:23,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:23,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:23,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:23,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:23,806 INFO L87 Difference]: Start difference. First operand 4312 states and 13027 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-11-03 01:40:24,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:24,097 INFO L93 Difference]: Finished difference Result 4498 states and 13534 transitions. [2022-11-03 01:40:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:40:24,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) Word has length 21 [2022-11-03 01:40:24,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:24,105 INFO L225 Difference]: With dead ends: 4498 [2022-11-03 01:40:24,105 INFO L226 Difference]: Without dead ends: 4498 [2022-11-03 01:40:24,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:24,105 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 42 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:24,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 33 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:40:24,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4498 states. [2022-11-03 01:40:24,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4498 to 4310. [2022-11-03 01:40:24,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 4302 states have (on average 3.02696420269642) internal successors, (13022), 4309 states have internal predecessors, (13022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:24,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 13022 transitions. [2022-11-03 01:40:24,171 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 13022 transitions. Word has length 21 [2022-11-03 01:40:24,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:24,171 INFO L495 AbstractCegarLoop]: Abstraction has 4310 states and 13022 transitions. [2022-11-03 01:40:24,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-11-03 01:40:24,171 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 13022 transitions. [2022-11-03 01:40:24,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:40:24,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:24,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:24,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-03 01:40:24,175 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:24,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:24,175 INFO L85 PathProgramCache]: Analyzing trace with hash -2126089354, now seen corresponding path program 6 times [2022-11-03 01:40:24,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:24,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884507251] [2022-11-03 01:40:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:24,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:24,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:24,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884507251] [2022-11-03 01:40:24,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884507251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:24,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:24,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:40:24,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019801361] [2022-11-03 01:40:24,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:24,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:40:24,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:24,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:40:24,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:40:24,466 INFO L87 Difference]: Start difference. First operand 4310 states and 13022 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2022-11-03 01:40:24,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:24,794 INFO L93 Difference]: Finished difference Result 4496 states and 13531 transitions. [2022-11-03 01:40:24,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:40:24,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 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) Word has length 21 [2022-11-03 01:40:24,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:24,802 INFO L225 Difference]: With dead ends: 4496 [2022-11-03 01:40:24,802 INFO L226 Difference]: Without dead ends: 4496 [2022-11-03 01:40:24,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:40:24,802 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 49 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:24,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 34 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:40:24,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4496 states. [2022-11-03 01:40:24,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4496 to 4268. [2022-11-03 01:40:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4268 states, 4261 states have (on average 3.0323867636705) internal successors, (12921), 4267 states have internal predecessors, (12921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:24,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4268 states to 4268 states and 12921 transitions. [2022-11-03 01:40:24,868 INFO L78 Accepts]: Start accepts. Automaton has 4268 states and 12921 transitions. Word has length 21 [2022-11-03 01:40:24,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:24,868 INFO L495 AbstractCegarLoop]: Abstraction has 4268 states and 12921 transitions. [2022-11-03 01:40:24,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2022-11-03 01:40:24,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4268 states and 12921 transitions. [2022-11-03 01:40:24,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:40:24,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:24,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:24,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-03 01:40:24,872 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:24,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:24,873 INFO L85 PathProgramCache]: Analyzing trace with hash -2039711028, now seen corresponding path program 3 times [2022-11-03 01:40:24,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:24,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559544931] [2022-11-03 01:40:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:24,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:25,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:25,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:25,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559544931] [2022-11-03 01:40:25,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559544931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:25,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:25,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:40:25,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724966760] [2022-11-03 01:40:25,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:25,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:40:25,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:25,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:40:25,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:40:25,161 INFO L87 Difference]: Start difference. First operand 4268 states and 12921 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2022-11-03 01:40:25,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:25,512 INFO L93 Difference]: Finished difference Result 4422 states and 13295 transitions. [2022-11-03 01:40:25,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:40:25,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 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) Word has length 21 [2022-11-03 01:40:25,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:25,520 INFO L225 Difference]: With dead ends: 4422 [2022-11-03 01:40:25,520 INFO L226 Difference]: Without dead ends: 4412 [2022-11-03 01:40:25,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:40:25,521 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 59 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:25,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 49 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:40:25,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4412 states. [2022-11-03 01:40:25,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4412 to 4004. [2022-11-03 01:40:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4004 states, 4000 states have (on average 3.02025) internal successors, (12081), 4003 states have internal predecessors, (12081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:25,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 12081 transitions. [2022-11-03 01:40:25,588 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 12081 transitions. Word has length 21 [2022-11-03 01:40:25,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:25,588 INFO L495 AbstractCegarLoop]: Abstraction has 4004 states and 12081 transitions. [2022-11-03 01:40:25,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2022-11-03 01:40:25,588 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 12081 transitions. [2022-11-03 01:40:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 01:40:25,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:25,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:25,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-03 01:40:25,593 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:25,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:25,593 INFO L85 PathProgramCache]: Analyzing trace with hash 17026359, now seen corresponding path program 1 times [2022-11-03 01:40:25,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:25,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066616308] [2022-11-03 01:40:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:25,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:25,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:25,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066616308] [2022-11-03 01:40:25,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066616308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:25,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:25,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:40:25,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717316596] [2022-11-03 01:40:25,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:25,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:40:25,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:25,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:40:25,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:40:25,691 INFO L87 Difference]: Start difference. First operand 4004 states and 12081 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 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) [2022-11-03 01:40:25,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:25,915 INFO L93 Difference]: Finished difference Result 4348 states and 12885 transitions. [2022-11-03 01:40:25,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:40:25,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 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 23 [2022-11-03 01:40:25,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:25,923 INFO L225 Difference]: With dead ends: 4348 [2022-11-03 01:40:25,923 INFO L226 Difference]: Without dead ends: 4012 [2022-11-03 01:40:25,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:25,923 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 125 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:25,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 0 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:40:25,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4012 states. [2022-11-03 01:40:25,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4012 to 3832. [2022-11-03 01:40:25,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3832 states, 3829 states have (on average 3.017236876469052) internal successors, (11553), 3831 states have internal predecessors, (11553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:25,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3832 states to 3832 states and 11553 transitions. [2022-11-03 01:40:25,983 INFO L78 Accepts]: Start accepts. Automaton has 3832 states and 11553 transitions. Word has length 23 [2022-11-03 01:40:25,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:25,983 INFO L495 AbstractCegarLoop]: Abstraction has 3832 states and 11553 transitions. [2022-11-03 01:40:25,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 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) [2022-11-03 01:40:25,983 INFO L276 IsEmpty]: Start isEmpty. Operand 3832 states and 11553 transitions. [2022-11-03 01:40:25,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 01:40:25,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:25,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:25,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-03 01:40:25,989 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:25,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:25,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1125247501, now seen corresponding path program 1 times [2022-11-03 01:40:25,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:25,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760246271] [2022-11-03 01:40:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:25,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:26,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:26,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760246271] [2022-11-03 01:40:26,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760246271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:26,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:26,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:40:26,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169439310] [2022-11-03 01:40:26,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:26,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:26,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:26,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:26,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:26,119 INFO L87 Difference]: Start difference. First operand 3832 states and 11553 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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) [2022-11-03 01:40:26,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:26,472 INFO L93 Difference]: Finished difference Result 4146 states and 12291 transitions. [2022-11-03 01:40:26,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:40:26,472 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-03 01:40:26,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:26,483 INFO L225 Difference]: With dead ends: 4146 [2022-11-03 01:40:26,483 INFO L226 Difference]: Without dead ends: 4050 [2022-11-03 01:40:26,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:40:26,484 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 237 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:26,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 0 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:40:26,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4050 states. [2022-11-03 01:40:26,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4050 to 3800. [2022-11-03 01:40:26,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3800 states, 3797 states have (on average 3.0100079009744536) internal successors, (11429), 3799 states have internal predecessors, (11429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:26,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 11429 transitions. [2022-11-03 01:40:26,574 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 11429 transitions. Word has length 32 [2022-11-03 01:40:26,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:26,576 INFO L495 AbstractCegarLoop]: Abstraction has 3800 states and 11429 transitions. [2022-11-03 01:40:26,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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) [2022-11-03 01:40:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 11429 transitions. [2022-11-03 01:40:26,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 01:40:26,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:26,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:26,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-03 01:40:26,585 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:26,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:26,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1125265361, now seen corresponding path program 1 times [2022-11-03 01:40:26,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:26,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479457176] [2022-11-03 01:40:26,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:26,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:26,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:26,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479457176] [2022-11-03 01:40:26,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479457176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:26,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:26,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:40:26,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559680642] [2022-11-03 01:40:26,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:26,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:26,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:26,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:26,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:26,707 INFO L87 Difference]: Start difference. First operand 3800 states and 11429 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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) [2022-11-03 01:40:27,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:27,076 INFO L93 Difference]: Finished difference Result 4038 states and 11985 transitions. [2022-11-03 01:40:27,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:40:27,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-03 01:40:27,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:27,082 INFO L225 Difference]: With dead ends: 4038 [2022-11-03 01:40:27,083 INFO L226 Difference]: Without dead ends: 3526 [2022-11-03 01:40:27,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:40:27,083 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 189 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:27,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 0 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:40:27,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3526 states. [2022-11-03 01:40:27,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3526 to 3384. [2022-11-03 01:40:27,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3384 states, 3381 states have (on average 2.9781129843241643) internal successors, (10069), 3383 states have internal predecessors, (10069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:27,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3384 states to 3384 states and 10069 transitions. [2022-11-03 01:40:27,146 INFO L78 Accepts]: Start accepts. Automaton has 3384 states and 10069 transitions. Word has length 32 [2022-11-03 01:40:27,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:27,146 INFO L495 AbstractCegarLoop]: Abstraction has 3384 states and 10069 transitions. [2022-11-03 01:40:27,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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) [2022-11-03 01:40:27,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3384 states and 10069 transitions. [2022-11-03 01:40:27,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 01:40:27,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:27,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:27,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-03 01:40:27,153 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:27,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:27,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1971658099, now seen corresponding path program 2 times [2022-11-03 01:40:27,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:27,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94425] [2022-11-03 01:40:27,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:27,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:27,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:27,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94425] [2022-11-03 01:40:27,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:27,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:27,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:40:27,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261443458] [2022-11-03 01:40:27,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:27,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:27,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:27,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:27,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:27,280 INFO L87 Difference]: Start difference. First operand 3384 states and 10069 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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) [2022-11-03 01:40:27,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:27,536 INFO L93 Difference]: Finished difference Result 3518 states and 10377 transitions. [2022-11-03 01:40:27,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:40:27,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-03 01:40:27,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:27,542 INFO L225 Difference]: With dead ends: 3518 [2022-11-03 01:40:27,542 INFO L226 Difference]: Without dead ends: 3422 [2022-11-03 01:40:27,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:40:27,543 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 141 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:27,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 2 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:40:27,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2022-11-03 01:40:27,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 3280. [2022-11-03 01:40:27,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3280 states, 3278 states have (on average 2.981391092129347) internal successors, (9773), 3279 states have internal predecessors, (9773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:27,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3280 states to 3280 states and 9773 transitions. [2022-11-03 01:40:27,589 INFO L78 Accepts]: Start accepts. Automaton has 3280 states and 9773 transitions. Word has length 32 [2022-11-03 01:40:27,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:27,589 INFO L495 AbstractCegarLoop]: Abstraction has 3280 states and 9773 transitions. [2022-11-03 01:40:27,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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) [2022-11-03 01:40:27,590 INFO L276 IsEmpty]: Start isEmpty. Operand 3280 states and 9773 transitions. [2022-11-03 01:40:27,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 01:40:27,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:27,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:27,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-03 01:40:27,595 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:27,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:27,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1971622335, now seen corresponding path program 1 times [2022-11-03 01:40:27,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:27,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764911670] [2022-11-03 01:40:27,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:27,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:27,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:27,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764911670] [2022-11-03 01:40:27,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764911670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:27,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:27,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:40:27,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407018702] [2022-11-03 01:40:27,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:27,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:27,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:27,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:27,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:27,717 INFO L87 Difference]: Start difference. First operand 3280 states and 9773 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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) [2022-11-03 01:40:28,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:28,026 INFO L93 Difference]: Finished difference Result 3408 states and 10067 transitions. [2022-11-03 01:40:28,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:40:28,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-03 01:40:28,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:28,031 INFO L225 Difference]: With dead ends: 3408 [2022-11-03 01:40:28,031 INFO L226 Difference]: Without dead ends: 2698 [2022-11-03 01:40:28,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:40:28,031 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 202 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:28,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 0 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:40:28,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2022-11-03 01:40:28,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2698. [2022-11-03 01:40:28,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 2696 states have (on average 2.9480712166172105) internal successors, (7948), 2697 states have internal predecessors, (7948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:28,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 7948 transitions. [2022-11-03 01:40:28,103 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 7948 transitions. Word has length 32 [2022-11-03 01:40:28,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:28,103 INFO L495 AbstractCegarLoop]: Abstraction has 2698 states and 7948 transitions. [2022-11-03 01:40:28,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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) [2022-11-03 01:40:28,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 7948 transitions. [2022-11-03 01:40:28,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 01:40:28,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:28,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:28,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-03 01:40:28,107 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:28,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:28,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1954480575, now seen corresponding path program 2 times [2022-11-03 01:40:28,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:28,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281406383] [2022-11-03 01:40:28,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:28,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:28,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:28,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281406383] [2022-11-03 01:40:28,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281406383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:28,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:28,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:40:28,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16259632] [2022-11-03 01:40:28,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:28,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:28,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:28,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:28,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:28,225 INFO L87 Difference]: Start difference. First operand 2698 states and 7948 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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) [2022-11-03 01:40:28,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:28,458 INFO L93 Difference]: Finished difference Result 2684 states and 7914 transitions. [2022-11-03 01:40:28,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:40:28,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-03 01:40:28,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:28,464 INFO L225 Difference]: With dead ends: 2684 [2022-11-03 01:40:28,464 INFO L226 Difference]: Without dead ends: 2500 [2022-11-03 01:40:28,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:40:28,464 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 170 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:28,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 0 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:40:28,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2022-11-03 01:40:28,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2500. [2022-11-03 01:40:28,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2499 states have (on average 2.962785114045618) internal successors, (7404), 2499 states have internal predecessors, (7404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:28,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 7404 transitions. [2022-11-03 01:40:28,517 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 7404 transitions. Word has length 32 [2022-11-03 01:40:28,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:28,518 INFO L495 AbstractCegarLoop]: Abstraction has 2500 states and 7404 transitions. [2022-11-03 01:40:28,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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) [2022-11-03 01:40:28,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 7404 transitions. [2022-11-03 01:40:28,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 01:40:28,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:28,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:28,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-03 01:40:28,523 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-03 01:40:28,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:28,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1954498479, now seen corresponding path program 2 times [2022-11-03 01:40:28,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:28,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114783646] [2022-11-03 01:40:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:28,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:28,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:28,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:28,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114783646] [2022-11-03 01:40:28,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114783646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:28,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:28,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:40:28,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258806022] [2022-11-03 01:40:28,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:28,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:40:28,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:28,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:40:28,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:40:28,640 INFO L87 Difference]: Start difference. First operand 2500 states and 7404 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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) [2022-11-03 01:40:28,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:28,837 INFO L93 Difference]: Finished difference Result 2488 states and 7374 transitions. [2022-11-03 01:40:28,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:40:28,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-03 01:40:28,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:28,838 INFO L225 Difference]: With dead ends: 2488 [2022-11-03 01:40:28,838 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 01:40:28,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:40:28,839 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 191 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:28,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 0 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:40:28,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 01:40:28,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 01:40:28,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:28,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 01:40:28,840 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2022-11-03 01:40:28,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:28,840 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 01:40:28,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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) [2022-11-03 01:40:28,840 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 01:40:28,840 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 01:40:28,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 27 remaining) [2022-11-03 01:40:28,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 27 remaining) [2022-11-03 01:40:28,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 27 remaining) [2022-11-03 01:40:28,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 27 remaining) [2022-11-03 01:40:28,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 27 remaining) [2022-11-03 01:40:28,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 27 remaining) [2022-11-03 01:40:28,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 27 remaining) [2022-11-03 01:40:28,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 27 remaining) [2022-11-03 01:40:28,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 27 remaining) [2022-11-03 01:40:28,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 27 remaining) [2022-11-03 01:40:28,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 27 remaining) [2022-11-03 01:40:28,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 27 remaining) [2022-11-03 01:40:28,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 27 remaining) [2022-11-03 01:40:28,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 27 remaining) [2022-11-03 01:40:28,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 27 remaining) [2022-11-03 01:40:28,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 27 remaining) [2022-11-03 01:40:28,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 27 remaining) [2022-11-03 01:40:28,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 27 remaining) [2022-11-03 01:40:28,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 27 remaining) [2022-11-03 01:40:28,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 27 remaining) [2022-11-03 01:40:28,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 27 remaining) [2022-11-03 01:40:28,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 27 remaining) [2022-11-03 01:40:28,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 27 remaining) [2022-11-03 01:40:28,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 27 remaining) [2022-11-03 01:40:28,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 27 remaining) [2022-11-03 01:40:28,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 27 remaining) [2022-11-03 01:40:28,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 27 remaining) [2022-11-03 01:40:28,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-03 01:40:28,852 INFO L444 BasicCegarLoop]: Path program histogram: [7, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:28,856 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-03 01:40:28,857 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:40:28,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:40:28 BasicIcfg [2022-11-03 01:40:28,859 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:40:28,860 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:40:28,860 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:40:28,860 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:40:28,861 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:39:33" (3/4) ... [2022-11-03 01:40:28,863 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 01:40:28,869 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-03 01:40:28,869 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-03 01:40:28,870 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-03 01:40:28,878 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-03 01:40:28,878 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-03 01:40:28,879 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 01:40:28,879 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 01:40:28,923 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 01:40:28,924 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:40:28,924 INFO L158 Benchmark]: Toolchain (without parser) took 56467.83ms. Allocated memory was 98.6MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 63.6MB in the beginning and 2.1GB in the end (delta: -2.1GB). Peak memory consumption was 416.5MB. Max. memory is 16.1GB. [2022-11-03 01:40:28,925 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 98.6MB. Free memory was 70.7MB in the beginning and 70.7MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:40:28,925 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.01ms. Allocated memory is still 98.6MB. Free memory was 63.2MB in the beginning and 72.7MB in the end (delta: -9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 01:40:28,926 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.02ms. Allocated memory is still 98.6MB. Free memory was 72.7MB in the beginning and 70.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:40:28,926 INFO L158 Benchmark]: Boogie Preprocessor took 67.17ms. Allocated memory is still 98.6MB. Free memory was 70.0MB in the beginning and 68.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:40:28,926 INFO L158 Benchmark]: RCFGBuilder took 937.11ms. Allocated memory is still 98.6MB. Free memory was 68.5MB in the beginning and 72.6MB in the end (delta: -4.1MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. [2022-11-03 01:40:28,926 INFO L158 Benchmark]: TraceAbstraction took 54953.55ms. Allocated memory was 119.5MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 95.6MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 423.1MB. Max. memory is 16.1GB. [2022-11-03 01:40:28,927 INFO L158 Benchmark]: Witness Printer took 63.78ms. Allocated memory is still 2.6GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 01:40:28,928 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 98.6MB. Free memory was 70.7MB in the beginning and 70.7MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.01ms. Allocated memory is still 98.6MB. Free memory was 63.2MB in the beginning and 72.7MB in the end (delta: -9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.02ms. Allocated memory is still 98.6MB. Free memory was 72.7MB in the beginning and 70.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.17ms. Allocated memory is still 98.6MB. Free memory was 70.0MB in the beginning and 68.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 937.11ms. Allocated memory is still 98.6MB. Free memory was 68.5MB in the beginning and 72.6MB in the end (delta: -4.1MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. * TraceAbstraction took 54953.55ms. Allocated memory was 119.5MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 95.6MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 423.1MB. Max. memory is 16.1GB. * Witness Printer took 63.78ms. Allocated memory is still 2.6GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.9s, 171 PlacesBefore, 68 PlacesAfterwards, 163 TransitionsBefore, 58 TransitionsAfterwards, 3240 CoEnabledTransitionPairs, 7 FixpointIterations, 81 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 131 TotalNumberOfCompositions, 24651 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7587, positive: 6973, positive conditional: 0, positive unconditional: 6973, negative: 614, negative conditional: 0, negative unconditional: 614, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2428, positive: 2324, positive conditional: 0, positive unconditional: 2324, negative: 104, negative conditional: 0, negative unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2428, positive: 2287, positive conditional: 0, positive unconditional: 2287, negative: 141, negative conditional: 0, negative unconditional: 141, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 141, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 104, negative conditional: 0, negative unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 321, positive: 80, positive conditional: 0, positive unconditional: 80, negative: 241, negative conditional: 0, negative unconditional: 241, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7587, positive: 4649, positive conditional: 0, positive unconditional: 4649, negative: 510, negative conditional: 0, negative unconditional: 510, unknown: 2428, unknown conditional: 0, unknown unconditional: 2428] , Statistics on independence cache: Total cache size (in pairs): 841, Positive cache size: 771, Positive conditional cache size: 0, Positive unconditional cache size: 771, Negative cache size: 70, Negative conditional cache size: 0, Negative unconditional cache size: 70 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 118]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 118]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 222 locations, 27 error locations. Started 1 CEGAR loops. OverallTime: 54.8s, OverallIterations: 56, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.2s, AutomataDifference: 22.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6019 SdHoareTripleChecker+Valid, 16.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6019 mSDsluCounter, 1164 SdHoareTripleChecker+Invalid, 13.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9063 mSDsCounter, 1382 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20423 IncrementalHoareTripleChecker+Invalid, 21805 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1382 mSolverCounterUnsat, 253 mSDtfsCounter, 20423 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 406 GetRequests, 88 SyntacticMatches, 17 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8350occurred in iteration=4, InterpolantAutomatonStates: 382, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.0s AutomataMinimizationTime, 56 MinimizatonAttempts, 109400 StatesRemovedByMinimization, 50 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 935 NumberOfCodeBlocks, 935 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 879 ConstructedInterpolants, 0 QuantifiedInterpolants, 6836 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 56 InterpolantComputations, 56 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-03 01:40:28,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b3d137-682d-448f-ad5a-c43b82b3b293/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE