./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh --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 1b81f923e96224472f8219a473f794261ff02356a47c6b09b527f0fc600725a8 --- 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-2329fc7 [2022-12-14 13:07:24,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:07:24,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:07:24,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:07:24,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:07:24,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:07:24,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:07:24,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:07:24,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:07:24,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:07:24,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:07:24,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:07:24,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:07:24,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:07:24,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:07:24,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:07:24,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:07:24,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:07:24,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:07:24,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:07:24,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:07:24,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:07:24,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:07:24,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:07:24,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:07:24,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:07:24,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:07:24,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:07:24,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:07:24,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:07:24,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:07:24,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:07:24,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:07:24,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:07:24,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:07:24,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:07:24,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:07:24,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:07:24,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:07:24,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:07:24,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:07:25,000 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 13:07:25,015 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:07:25,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:07:25,015 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:07:25,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:07:25,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:07:25,016 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:07:25,016 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:07:25,016 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:07:25,016 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:07:25,016 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:07:25,016 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:07:25,016 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:07:25,016 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:07:25,016 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:07:25,017 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:07:25,017 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:07:25,017 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:07:25,017 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:07:25,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:07:25,017 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:07:25,017 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 13:07:25,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:07:25,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:07:25,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:07:25,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:07:25,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:07:25,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:07:25,018 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 13:07:25,018 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:07:25,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:07:25,018 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:07:25,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:07:25,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:07:25,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:07:25,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:07:25,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:07:25,019 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:07:25,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:07:25,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:07:25,019 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:07:25,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:07:25,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:07:25,019 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:07:25,020 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_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b81f923e96224472f8219a473f794261ff02356a47c6b09b527f0fc600725a8 [2022-12-14 13:07:25,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:07:25,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:07:25,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:07:25,218 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:07:25,218 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:07:25,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i [2022-12-14 13:07:27,782 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:07:27,994 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:07:27,995 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i [2022-12-14 13:07:28,008 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/data/7d33cb4da/6411edc939084ee6a85280874ee285b1/FLAG832b82223 [2022-12-14 13:07:28,382 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/data/7d33cb4da/6411edc939084ee6a85280874ee285b1 [2022-12-14 13:07:28,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:07:28,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:07:28,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:07:28,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:07:28,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:07:28,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:07:28" (1/1) ... [2022-12-14 13:07:28,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ddbe14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:07:28, skipping insertion in model container [2022-12-14 13:07:28,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:07:28" (1/1) ... [2022-12-14 13:07:28,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:07:28,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:07:28,667 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i[25148,25161] [2022-12-14 13:07:28,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:07:28,676 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:07:28,718 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i[25148,25161] [2022-12-14 13:07:28,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:07:28,740 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:07:28,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:07:28 WrapperNode [2022-12-14 13:07:28,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:07:28,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:07:28,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:07:28,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:07:28,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:07:28" (1/1) ... [2022-12-14 13:07:28,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:07:28" (1/1) ... [2022-12-14 13:07:28,773 INFO L138 Inliner]: procedures = 127, calls = 58, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 199 [2022-12-14 13:07:28,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:07:28,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:07:28,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:07:28,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:07:28,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:07:28" (1/1) ... [2022-12-14 13:07:28,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:07:28" (1/1) ... [2022-12-14 13:07:28,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:07:28" (1/1) ... [2022-12-14 13:07:28,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:07:28" (1/1) ... [2022-12-14 13:07:28,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:07:28" (1/1) ... [2022-12-14 13:07:28,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:07:28" (1/1) ... [2022-12-14 13:07:28,806 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:07:28" (1/1) ... [2022-12-14 13:07:28,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:07:28" (1/1) ... [2022-12-14 13:07:28,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:07:28,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:07:28,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:07:28,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:07:28,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:07:28" (1/1) ... [2022-12-14 13:07:28,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:07:28,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:07:28,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:07:28,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:07:28,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 13:07:28,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 13:07:28,871 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-12-14 13:07:28,871 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-12-14 13:07:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 13:07:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:07:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:07:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 13:07:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 13:07:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:07:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 13:07:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:07:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:07:28,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:07:28,957 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:07:28,958 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:07:29,253 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:07:29,344 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:07:29,344 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-14 13:07:29,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:07:29 BoogieIcfgContainer [2022-12-14 13:07:29,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:07:29,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:07:29,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:07:29,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:07:29,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:07:28" (1/3) ... [2022-12-14 13:07:29,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d7f2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:07:29, skipping insertion in model container [2022-12-14 13:07:29,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:07:28" (2/3) ... [2022-12-14 13:07:29,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d7f2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:07:29, skipping insertion in model container [2022-12-14 13:07:29,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:07:29" (3/3) ... [2022-12-14 13:07:29,355 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_insert_unequal.i [2022-12-14 13:07:29,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:07:29,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-14 13:07:29,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:07:29,412 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;@59bba777, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:07:29,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-12-14 13:07:29,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 51 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 13:07:29,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 13:07:29,421 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:07:29,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:07:29,421 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 13:07:29,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:07:29,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1899973349, now seen corresponding path program 1 times [2022-12-14 13:07:29,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:07:29,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937336801] [2022-12-14 13:07:29,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:29,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:07:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:07:29,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:07:29,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937336801] [2022-12-14 13:07:29,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937336801] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:07:29,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:07:29,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:07:29,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544323753] [2022-12-14 13:07:29,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:07:29,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:07:29,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:07:29,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:07:29,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:07:29,690 INFO L87 Difference]: Start difference. First operand has 56 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 51 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 13:07:30,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:07:30,013 INFO L93 Difference]: Finished difference Result 109 states and 136 transitions. [2022-12-14 13:07:30,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:07:30,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2022-12-14 13:07:30,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:07:30,019 INFO L225 Difference]: With dead ends: 109 [2022-12-14 13:07:30,020 INFO L226 Difference]: Without dead ends: 55 [2022-12-14 13:07:30,021 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 [2022-12-14 13:07:30,023 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 5 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:07:30,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 112 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:07:30,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-12-14 13:07:30,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2022-12-14 13:07:30,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 44 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 13:07:30,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2022-12-14 13:07:30,050 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 8 [2022-12-14 13:07:30,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:07:30,050 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2022-12-14 13:07:30,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 13:07:30,050 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2022-12-14 13:07:30,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 13:07:30,051 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:07:30,051 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:07:30,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:07:30,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 13:07:30,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:07:30,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1899492300, now seen corresponding path program 1 times [2022-12-14 13:07:30,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:07:30,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592130898] [2022-12-14 13:07:30,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:30,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:07:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 13:07:30,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:07:30,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592130898] [2022-12-14 13:07:30,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592130898] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:07:30,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:07:30,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:07:30,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80525959] [2022-12-14 13:07:30,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:07:30,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:07:30,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:07:30,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:07:30,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:07:30,180 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 13:07:30,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:07:30,590 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2022-12-14 13:07:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:07:30,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2022-12-14 13:07:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:07:30,591 INFO L225 Difference]: With dead ends: 55 [2022-12-14 13:07:30,592 INFO L226 Difference]: Without dead ends: 54 [2022-12-14 13:07:30,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:07:30,593 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 5 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:07:30,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 127 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 13:07:30,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-12-14 13:07:30,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2022-12-14 13:07:30,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 46 states have internal predecessors, (50), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 13:07:30,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2022-12-14 13:07:30,601 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 13 [2022-12-14 13:07:30,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:07:30,601 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2022-12-14 13:07:30,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 13:07:30,601 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2022-12-14 13:07:30,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 13:07:30,602 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:07:30,602 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:07:30,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:07:30,603 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 13:07:30,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:07:30,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1245280788, now seen corresponding path program 1 times [2022-12-14 13:07:30,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:07:30,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599776532] [2022-12-14 13:07:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:30,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:07:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 13:07:30,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:07:30,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599776532] [2022-12-14 13:07:30,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599776532] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:07:30,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:07:30,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:07:30,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176072913] [2022-12-14 13:07:30,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:07:30,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:07:30,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:07:30,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:07:30,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:07:30,691 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 13:07:32,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 13:07:32,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:07:32,956 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2022-12-14 13:07:32,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:07:32,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2022-12-14 13:07:32,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:07:32,958 INFO L225 Difference]: With dead ends: 54 [2022-12-14 13:07:32,958 INFO L226 Difference]: Without dead ends: 53 [2022-12-14 13:07:32,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:07:32,960 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 2 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:07:32,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 128 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 13:07:32,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-12-14 13:07:32,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-12-14 13:07:32,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.5) internal successors, (51), 47 states have internal predecessors, (51), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 13:07:32,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2022-12-14 13:07:32,964 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 14 [2022-12-14 13:07:32,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:07:32,964 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2022-12-14 13:07:32,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 13:07:32,964 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2022-12-14 13:07:32,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 13:07:32,965 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:07:32,965 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:07:32,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 13:07:32,965 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 13:07:32,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:07:32,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1581045386, now seen corresponding path program 1 times [2022-12-14 13:07:32,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:07:32,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309282165] [2022-12-14 13:07:32,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:32,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:07:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 13:07:33,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:07:33,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309282165] [2022-12-14 13:07:33,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309282165] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:07:33,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434191344] [2022-12-14 13:07:33,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:33,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:07:33,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:07:33,081 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:07:33,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:07:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:33,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 13:07:33,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:07:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:07:33,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:07:33,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434191344] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:07:33,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:07:33,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2022-12-14 13:07:33,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929023095] [2022-12-14 13:07:33,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:07:33,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:07:33,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:07:33,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:07:33,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:07:33,233 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 13:07:33,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:07:33,481 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-12-14 13:07:33,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:07:33,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-12-14 13:07:33,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:07:33,482 INFO L225 Difference]: With dead ends: 53 [2022-12-14 13:07:33,482 INFO L226 Difference]: Without dead ends: 51 [2022-12-14 13:07:33,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:07:33,483 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 36 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:07:33,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 43 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:07:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-12-14 13:07:33,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-12-14 13:07:33,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 45 states have internal predecessors, (49), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 13:07:33,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-12-14 13:07:33,490 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 16 [2022-12-14 13:07:33,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:07:33,490 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-12-14 13:07:33,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 13:07:33,491 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-12-14 13:07:33,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 13:07:33,491 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:07:33,492 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:07:33,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:07:33,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:07:33,694 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 13:07:33,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:07:33,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1767766776, now seen corresponding path program 1 times [2022-12-14 13:07:33,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:07:33,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249166373] [2022-12-14 13:07:33,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:33,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:07:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:33,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 13:07:33,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:07:33,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249166373] [2022-12-14 13:07:33,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249166373] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:07:33,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031481838] [2022-12-14 13:07:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:33,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:07:33,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:07:33,923 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:07:33,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:07:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:34,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:07:34,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:07:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:07:34,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:07:34,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031481838] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:07:34,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:07:34,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-12-14 13:07:34,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874873215] [2022-12-14 13:07:34,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:07:34,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:07:34,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:07:34,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:07:34,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 13:07:34,043 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 13:07:35,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 13:07:35,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:07:35,251 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-12-14 13:07:35,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:07:35,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-12-14 13:07:35,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:07:35,252 INFO L225 Difference]: With dead ends: 51 [2022-12-14 13:07:35,252 INFO L226 Difference]: Without dead ends: 47 [2022-12-14 13:07:35,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 13:07:35,253 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 33 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:07:35,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 43 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 13:07:35,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-14 13:07:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-12-14 13:07:35,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.40625) internal successors, (45), 41 states have internal predecessors, (45), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 13:07:35,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-12-14 13:07:35,258 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 17 [2022-12-14 13:07:35,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:07:35,258 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-12-14 13:07:35,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 13:07:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-12-14 13:07:35,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 13:07:35,258 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:07:35,259 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:07:35,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 13:07:35,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:07:35,460 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 13:07:35,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:07:35,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1703470919, now seen corresponding path program 1 times [2022-12-14 13:07:35,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:07:35,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064556709] [2022-12-14 13:07:35,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:35,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:07:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:35,535 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 13:07:35,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:07:35,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064556709] [2022-12-14 13:07:35,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064556709] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:07:35,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:07:35,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:07:35,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897525352] [2022-12-14 13:07:35,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:07:35,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:07:35,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:07:35,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:07:35,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:07:35,537 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:07:36,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:07:36,297 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2022-12-14 13:07:36,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:07:36,298 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), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-12-14 13:07:36,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:07:36,298 INFO L225 Difference]: With dead ends: 47 [2022-12-14 13:07:36,298 INFO L226 Difference]: Without dead ends: 46 [2022-12-14 13:07:36,298 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 [2022-12-14 13:07:36,299 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 13:07:36,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 102 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 13:07:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-12-14 13:07:36,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-12-14 13:07:36,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.375) internal successors, (44), 40 states have internal predecessors, (44), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 13:07:36,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-12-14 13:07:36,307 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 21 [2022-12-14 13:07:36,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:07:36,307 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-12-14 13:07:36,307 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), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:07:36,307 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-12-14 13:07:36,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 13:07:36,308 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:07:36,308 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 13:07:36,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 13:07:36,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 13:07:36,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:07:36,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1267990993, now seen corresponding path program 1 times [2022-12-14 13:07:36,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:07:36,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658832437] [2022-12-14 13:07:36,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:36,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:07:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 13:07:36,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:07:36,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658832437] [2022-12-14 13:07:36,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658832437] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:07:36,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417871263] [2022-12-14 13:07:36,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:36,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:07:36,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:07:36,388 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:07:36,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 13:07:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:36,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:07:36,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:07:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 13:07:36,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:07:36,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417871263] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:07:36,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:07:36,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2022-12-14 13:07:36,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499036086] [2022-12-14 13:07:36,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:07:36,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 13:07:36,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:07:36,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 13:07:36,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:07:36,539 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:07:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:07:36,717 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2022-12-14 13:07:36,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:07:36,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-12-14 13:07:36,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:07:36,718 INFO L225 Difference]: With dead ends: 79 [2022-12-14 13:07:36,718 INFO L226 Difference]: Without dead ends: 41 [2022-12-14 13:07:36,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 13:07:36,719 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 64 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:07:36,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 75 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:07:36,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-14 13:07:36,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-12-14 13:07:36,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 13:07:36,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-12-14 13:07:36,724 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 22 [2022-12-14 13:07:36,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:07:36,724 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-12-14 13:07:36,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:07:36,725 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-12-14 13:07:36,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 13:07:36,725 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:07:36,725 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:07:36,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 13:07:36,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 13:07:36,927 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 13:07:36,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:07:36,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1040379132, now seen corresponding path program 1 times [2022-12-14 13:07:36,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:07:36,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052248272] [2022-12-14 13:07:36,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:36,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:07:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 13:07:37,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:07:37,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052248272] [2022-12-14 13:07:37,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052248272] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:07:37,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:07:37,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:07:37,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048752865] [2022-12-14 13:07:37,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:07:37,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:07:37,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:07:37,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:07:37,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:07:37,096 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 13:07:38,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:07:38,022 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2022-12-14 13:07:38,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:07:38,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-12-14 13:07:38,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:07:38,023 INFO L225 Difference]: With dead ends: 41 [2022-12-14 13:07:38,023 INFO L226 Difference]: Without dead ends: 40 [2022-12-14 13:07:38,023 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 [2022-12-14 13:07:38,024 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 13:07:38,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 66 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 13:07:38,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-14 13:07:38,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-12-14 13:07:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 35 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 13:07:38,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2022-12-14 13:07:38,029 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 24 [2022-12-14 13:07:38,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:07:38,029 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2022-12-14 13:07:38,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 13:07:38,029 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2022-12-14 13:07:38,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 13:07:38,030 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:07:38,030 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:07:38,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 13:07:38,034 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 13:07:38,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:07:38,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2107985357, now seen corresponding path program 1 times [2022-12-14 13:07:38,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:07:38,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621000344] [2022-12-14 13:07:38,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:38,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:07:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 13:07:38,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:07:38,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621000344] [2022-12-14 13:07:38,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621000344] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:07:38,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516198963] [2022-12-14 13:07:38,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:38,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:07:38,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:07:38,175 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:07:38,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 13:07:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:38,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:07:38,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:07:38,513 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 13:07:38,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:07:38,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516198963] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:07:38,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:07:38,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-14 13:07:38,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820307194] [2022-12-14 13:07:38,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:07:38,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:07:38,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:07:38,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:07:38,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-14 13:07:38,515 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:07:38,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:07:38,686 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-12-14 13:07:38,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:07:38,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-12-14 13:07:38,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:07:38,687 INFO L225 Difference]: With dead ends: 40 [2022-12-14 13:07:38,687 INFO L226 Difference]: Without dead ends: 39 [2022-12-14 13:07:38,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-14 13:07:38,688 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 24 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:07:38,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 76 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:07:38,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-14 13:07:38,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-12-14 13:07:38,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 34 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 13:07:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-12-14 13:07:38,692 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 25 [2022-12-14 13:07:38,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:07:38,693 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-12-14 13:07:38,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:07:38,693 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-12-14 13:07:38,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 13:07:38,693 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:07:38,694 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:07:38,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 13:07:38,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:07:38,895 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 13:07:38,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:07:38,896 INFO L85 PathProgramCache]: Analyzing trace with hash 927379340, now seen corresponding path program 1 times [2022-12-14 13:07:38,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:07:38,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175459708] [2022-12-14 13:07:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:38,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:07:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:39,128 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 13:07:39,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:07:39,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175459708] [2022-12-14 13:07:39,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175459708] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:07:39,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:07:39,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:07:39,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883771943] [2022-12-14 13:07:39,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:07:39,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:07:39,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:07:39,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:07:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:07:39,130 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 13:07:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:07:39,592 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2022-12-14 13:07:39,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:07:39,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-12-14 13:07:39,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:07:39,593 INFO L225 Difference]: With dead ends: 45 [2022-12-14 13:07:39,593 INFO L226 Difference]: Without dead ends: 43 [2022-12-14 13:07:39,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:07:39,594 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 3 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 13:07:39,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 96 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 13:07:39,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-12-14 13:07:39,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-12-14 13:07:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 13:07:39,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-12-14 13:07:39,597 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 26 [2022-12-14 13:07:39,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:07:39,598 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-12-14 13:07:39,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 13:07:39,598 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-12-14 13:07:39,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 13:07:39,598 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:07:39,598 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:07:39,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 13:07:39,598 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 13:07:39,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:07:39,599 INFO L85 PathProgramCache]: Analyzing trace with hash -15679957, now seen corresponding path program 1 times [2022-12-14 13:07:39,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:07:39,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034286665] [2022-12-14 13:07:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:39,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:07:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 13:07:39,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:07:39,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034286665] [2022-12-14 13:07:39,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034286665] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:07:39,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928704869] [2022-12-14 13:07:39,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:39,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:07:39,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:07:39,952 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:07:39,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 13:07:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:40,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 13:07:40,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:07:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 13:07:40,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:07:40,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928704869] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:07:40,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:07:40,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-12-14 13:07:40,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108247302] [2022-12-14 13:07:40,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:07:40,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:07:40,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:07:40,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:07:40,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-14 13:07:40,267 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 13:07:40,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:07:40,649 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2022-12-14 13:07:40,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 13:07:40,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-12-14 13:07:40,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:07:40,650 INFO L225 Difference]: With dead ends: 49 [2022-12-14 13:07:40,650 INFO L226 Difference]: Without dead ends: 47 [2022-12-14 13:07:40,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-12-14 13:07:40,651 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:07:40,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 120 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 13:07:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-14 13:07:40,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2022-12-14 13:07:40,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 13:07:40,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-12-14 13:07:40,656 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 31 [2022-12-14 13:07:40,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:07:40,656 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-12-14 13:07:40,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 13:07:40,656 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-12-14 13:07:40,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-14 13:07:40,657 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:07:40,657 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:07:40,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 13:07:40,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 13:07:40,859 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 13:07:40,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:07:40,860 INFO L85 PathProgramCache]: Analyzing trace with hash -486078536, now seen corresponding path program 1 times [2022-12-14 13:07:40,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:07:40,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773213212] [2022-12-14 13:07:40,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:40,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:07:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 13:07:41,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:07:41,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773213212] [2022-12-14 13:07:41,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773213212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:07:41,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:07:41,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 13:07:41,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792589578] [2022-12-14 13:07:41,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:07:41,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:07:41,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:07:41,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:07:41,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:07:41,082 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 13:07:42,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:07:42,079 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2022-12-14 13:07:42,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 13:07:42,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2022-12-14 13:07:42,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:07:42,080 INFO L225 Difference]: With dead ends: 52 [2022-12-14 13:07:42,080 INFO L226 Difference]: Without dead ends: 51 [2022-12-14 13:07:42,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 13:07:42,081 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:07:42,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 134 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 13:07:42,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-12-14 13:07:42,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2022-12-14 13:07:42,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 41 states have internal predecessors, (45), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 13:07:42,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-12-14 13:07:42,085 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 32 [2022-12-14 13:07:42,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:07:42,086 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-12-14 13:07:42,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 13:07:42,086 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-12-14 13:07:42,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-14 13:07:42,086 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:07:42,087 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:07:42,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 13:07:42,087 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 13:07:42,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:07:42,087 INFO L85 PathProgramCache]: Analyzing trace with hash -484847174, now seen corresponding path program 1 times [2022-12-14 13:07:42,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:07:42,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222915333] [2022-12-14 13:07:42,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:42,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:07:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 13:07:42,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:07:42,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222915333] [2022-12-14 13:07:42,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222915333] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:07:42,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195949529] [2022-12-14 13:07:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:42,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:07:42,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:07:42,290 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:07:42,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 13:07:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:42,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 13:07:42,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:07:42,603 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 13:07:42,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:07:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 13:07:42,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195949529] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:07:42,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2087086744] [2022-12-14 13:07:42,656 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-12-14 13:07:42,656 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:07:42,659 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:07:42,662 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:07:42,662 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:07:42,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:42,724 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 13:07:42,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 13:07:42,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:42,749 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:07:42,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 13:07:42,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 13:07:42,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 13:07:42,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:42,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:42,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 13:07:42,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:42,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:42,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 13:07:42,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:42,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:42,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 13:07:42,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:42,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 13:07:42,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:42,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 13:07:42,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:42,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 13:07:42,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:42,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 13:07:43,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 13:07:43,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 13:07:43,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 13:07:43,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 13:07:43,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 13:07:43,243 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:43,245 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:43,246 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:43,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 13:07:43,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 13:07:43,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 13:07:43,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 13:07:43,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 13:07:43,498 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:43,500 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:43,502 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:43,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 18 [2022-12-14 13:07:43,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,555 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:43,564 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 13:07:43,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 30 [2022-12-14 13:07:43,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:43,588 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 13:07:43,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 34 [2022-12-14 13:07:43,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-12-14 13:07:43,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:43,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-12-14 13:07:43,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-12-14 13:07:43,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:43,760 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 13:07:43,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 13:07:43,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:43,780 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 13:07:43,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 13:07:43,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,834 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:43,838 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 13:07:43,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 13:07:43,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:43,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:43,856 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 13:07:43,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 13:07:43,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:43,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:43,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:43,965 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:44,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:44,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 13:07:44,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:44,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 13:07:44,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 13:07:44,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 13:07:44,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 13:07:44,378 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:44,380 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:44,381 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:44,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 13:07:44,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 13:07:44,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:44,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 13:07:44,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 13:07:44,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:44,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 13:07:44,650 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:44,652 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:44,654 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:44,682 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 21 for LOIs [2022-12-14 13:07:44,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 13:07:44,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 13:07:44,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:44,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:44,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 13:07:44,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:44,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:44,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 13:07:44,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:44,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:44,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 13:07:44,738 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:07:46,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2087086744] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:07:46,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:07:46,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5, 5, 5] total 25 [2022-12-14 13:07:46,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544573236] [2022-12-14 13:07:46,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:07:46,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 13:07:46,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:07:46,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 13:07:46,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2022-12-14 13:07:46,486 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 15 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 13:07:47,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:07:47,894 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2022-12-14 13:07:47,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 13:07:47,894 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-12-14 13:07:47,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:07:47,894 INFO L225 Difference]: With dead ends: 74 [2022-12-14 13:07:47,894 INFO L226 Difference]: Without dead ends: 47 [2022-12-14 13:07:47,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2022-12-14 13:07:47,895 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:07:47,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 182 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 13:07:47,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-14 13:07:47,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-12-14 13:07:47,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 42 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 13:07:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-12-14 13:07:47,900 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 32 [2022-12-14 13:07:47,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:07:47,900 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-12-14 13:07:47,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 13:07:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-12-14 13:07:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 13:07:47,900 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:07:47,900 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:07:47,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 13:07:48,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 13:07:48,102 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 13:07:48,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:07:48,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1135641627, now seen corresponding path program 1 times [2022-12-14 13:07:48,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:07:48,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116773891] [2022-12-14 13:07:48,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:48,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:07:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 13:07:48,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:07:48,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116773891] [2022-12-14 13:07:48,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116773891] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:07:48,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399307219] [2022-12-14 13:07:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:48,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:07:48,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:07:48,311 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:07:48,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74523f22-ec2e-462c-aa0d-650fd1d6476a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 13:07:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:48,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 13:07:48,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:07:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 13:07:48,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:07:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 13:07:48,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399307219] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:07:48,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2122895928] [2022-12-14 13:07:48,726 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-12-14 13:07:48,726 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:07:48,727 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:07:48,727 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:07:48,727 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:07:48,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:48,760 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:07:48,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 13:07:48,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:48,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 13:07:48,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 13:07:48,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 13:07:48,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:48,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:48,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 13:07:48,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:48,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:48,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 13:07:48,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:48,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:48,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 13:07:48,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:48,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 13:07:48,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:48,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 13:07:48,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:48,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 13:07:48,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:48,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 13:07:49,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 13:07:49,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 13:07:49,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:49,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 13:07:49,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 13:07:49,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:49,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 13:07:49,226 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:49,227 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:49,228 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:49,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:49,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 13:07:49,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 13:07:49,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 13:07:49,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 13:07:49,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:49,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 13:07:49,467 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:49,469 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:49,470 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:07:49,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:49,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:49,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 249 treesize of output 233 [2022-12-14 13:07:49,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:49,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:49,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:49,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:49,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:49,583 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 13:07:49,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 356 treesize of output 367 [2022-12-14 13:07:49,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:49,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:49,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:49,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:49,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:49,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:49,613 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 13:07:49,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 368 treesize of output 255 [2022-12-14 13:07:49,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:49,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 13 [2022-12-14 13:07:49,665 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-12-14 13:07:49,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 17 [2022-12-14 13:07:49,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:49,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-12-14 13:07:49,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:49,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-12-14 13:07:49,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:49,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:49,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-12-14 13:07:49,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:49,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-12-14 13:07:50,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:50,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:50,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:50,009 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 13:07:50,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 13:07:50,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:50,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:50,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:50,038 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 13:07:50,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 13:07:50,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:50,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:50,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:50,146 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 13:07:50,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 13:07:50,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:50,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:50,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:50,169 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 13:07:50,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 13:07:50,551 INFO L321 Elim1Store]: treesize reduction 122, result has 32.6 percent of original size [2022-12-14 13:07:50,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 68 [2022-12-14 13:07:50,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:50,639 INFO L321 Elim1Store]: treesize reduction 141, result has 22.1 percent of original size [2022-12-14 13:07:50,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 49 [2022-12-14 13:07:50,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:07:50,760 INFO L321 Elim1Store]: treesize reduction 131, result has 34.2 percent of original size [2022-12-14 13:07:50,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 68 [2022-12-14 13:07:50,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 3222 treesize of output 3229 [2022-12-14 13:07:50,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:50,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:07:59,967 WARN L233 SmtUtils]: Spent 9.15s on a formula simplification. DAG size of input: 111 DAG size of output: 62 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 13:07:59,968 INFO L321 Elim1Store]: treesize reduction 1072, result has 19.0 percent of original size [2022-12-14 13:07:59,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 2253 treesize of output 2030 [2022-12-14 13:08:00,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:08:00,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:08:09,438 WARN L233 SmtUtils]: Spent 9.40s on a formula simplification. DAG size of input: 145 DAG size of output: 78 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 13:08:09,438 INFO L321 Elim1Store]: treesize reduction 855, result has 20.1 percent of original size [2022-12-14 13:08:09,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 1398 treesize of output 1495 [2022-12-14 13:08:09,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 13:08:09,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 20 [2022-12-14 13:08:09,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:08:09,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 17 [2022-12-14 13:08:10,015 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 13:08:10,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:08:10,540 INFO L321 Elim1Store]: treesize reduction 92, result has 33.3 percent of original size [2022-12-14 13:08:10,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 64 [2022-12-14 13:08:10,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2022-12-14 13:08:10,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-12-14 13:08:20,315 WARN L233 SmtUtils]: Spent 9.51s on a formula simplification. DAG size of input: 129 DAG size of output: 54 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 13:08:20,316 INFO L321 Elim1Store]: treesize reduction 559, result has 22.4 percent of original size [2022-12-14 13:08:20,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 10 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 5677 treesize of output 7854 [2022-12-14 13:09:28,834 WARN L233 SmtUtils]: Spent 1.14m on a formula simplification. DAG size of input: 266 DAG size of output: 85 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 13:09:28,834 INFO L321 Elim1Store]: treesize reduction 1691, result has 13.1 percent of original size [2022-12-14 13:09:28,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 12 new quantified variables, introduced 42 case distinctions, treesize of input 18003 treesize of output 19397 [2022-12-14 13:20:35,300 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 90206 DAG size of output: 90192 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)