./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-nla/hard2-both-nt.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-nla/hard2-both-nt.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9 --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 23ac641bc90237de255e915a5ed362430f6ac59f0f6642be7f9d8479ff0a7576 --- 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-6b4ec56 [2022-11-20 19:47:28,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:47:28,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:47:28,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:47:28,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:47:28,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:47:28,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:47:28,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:47:28,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:47:28,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:47:28,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:47:28,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:47:28,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:47:28,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:47:28,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:47:28,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:47:28,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:47:29,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:47:29,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:47:29,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:47:29,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:47:29,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:47:29,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:47:29,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:47:29,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:47:29,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:47:29,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:47:29,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:47:29,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:47:29,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:47:29,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:47:29,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:47:29,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:47:29,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:47:29,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:47:29,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:47:29,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:47:29,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:47:29,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:47:29,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:47:29,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:47:29,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-20 19:47:29,097 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:47:29,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:47:29,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:47:29,102 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:47:29,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:47:29,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:47:29,103 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:47:29,104 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:47:29,104 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:47:29,104 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:47:29,105 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:47:29,106 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:47:29,106 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:47:29,106 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:47:29,106 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:47:29,106 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:47:29,107 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:47:29,107 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:47:29,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:47:29,108 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 19:47:29,109 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 19:47:29,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:47:29,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 19:47:29,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:47:29,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:47:29,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:47:29,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:47:29,122 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 19:47:29,123 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 19:47:29,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:47:29,123 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:47:29,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:47:29,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:47:29,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:47:29,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:47:29,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:47:29,125 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:47:29,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:47:29,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:47:29,126 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:47:29,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:47:29,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:47:29,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:47:29,127 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_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23ac641bc90237de255e915a5ed362430f6ac59f0f6642be7f9d8479ff0a7576 [2022-11-20 19:47:29,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:47:29,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:47:29,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:47:29,454 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:47:29,456 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:47:29,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/termination-nla/hard2-both-nt.c [2022-11-20 19:47:32,699 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:47:32,898 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:47:32,899 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/sv-benchmarks/c/termination-nla/hard2-both-nt.c [2022-11-20 19:47:32,907 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/data/fb21ef62e/49e84b8e143a453a880344d425a91cb2/FLAGfc24f9494 [2022-11-20 19:47:32,925 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/data/fb21ef62e/49e84b8e143a453a880344d425a91cb2 [2022-11-20 19:47:32,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:47:32,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:47:32,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:47:32,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:47:32,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:47:32,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:47:32" (1/1) ... [2022-11-20 19:47:32,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@519eb95e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:32, skipping insertion in model container [2022-11-20 19:47:32,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:47:32" (1/1) ... [2022-11-20 19:47:32,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:47:33,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:47:33,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:47:33,268 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:47:33,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:47:33,313 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:47:33,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:33 WrapperNode [2022-11-20 19:47:33,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:47:33,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:47:33,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:47:33,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:47:33,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:33" (1/1) ... [2022-11-20 19:47:33,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:33" (1/1) ... [2022-11-20 19:47:33,361 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2022-11-20 19:47:33,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:47:33,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:47:33,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:47:33,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:47:33,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:33" (1/1) ... [2022-11-20 19:47:33,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:33" (1/1) ... [2022-11-20 19:47:33,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:33" (1/1) ... [2022-11-20 19:47:33,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:33" (1/1) ... [2022-11-20 19:47:33,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:33" (1/1) ... [2022-11-20 19:47:33,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:33" (1/1) ... [2022-11-20 19:47:33,394 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:33" (1/1) ... [2022-11-20 19:47:33,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:33" (1/1) ... [2022-11-20 19:47:33,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:47:33,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:47:33,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:47:33,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:47:33,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:33" (1/1) ... [2022-11-20 19:47:33,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:47:33,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:33,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:47:33,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:47:33,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:47:33,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:47:33,575 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:47:33,578 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:47:33,796 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:47:33,817 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:47:33,817 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 19:47:33,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:47:33 BoogieIcfgContainer [2022-11-20 19:47:33,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:47:33,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:47:33,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:47:33,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:47:33,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:47:32" (1/3) ... [2022-11-20 19:47:33,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ed228e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:47:33, skipping insertion in model container [2022-11-20 19:47:33,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:33" (2/3) ... [2022-11-20 19:47:33,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ed228e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:47:33, skipping insertion in model container [2022-11-20 19:47:33,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:47:33" (3/3) ... [2022-11-20 19:47:33,831 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2-both-nt.c [2022-11-20 19:47:33,854 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:47:33,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-20 19:47:33,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:47:33,931 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;@843b9a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:47:33,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-20 19:47:33,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 25 states have (on average 1.92) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:33,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 19:47:33,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:33,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 19:47:33,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:33,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:33,953 INFO L85 PathProgramCache]: Analyzing trace with hash 109907, now seen corresponding path program 1 times [2022-11-20 19:47:33,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:33,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115767540] [2022-11-20 19:47:33,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:33,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:34,070 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:34,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1722440728] [2022-11-20 19:47:34,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:34,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:34,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:34,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:34,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 19:47:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:34,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 19:47:34,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:34,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:34,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:47:34,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:34,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115767540] [2022-11-20 19:47:34,230 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:34,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722440728] [2022-11-20 19:47:34,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722440728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:34,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:34,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 19:47:34,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155374499] [2022-11-20 19:47:34,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:34,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:47:34,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:34,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:47:34,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:34,289 INFO L87 Difference]: Start difference. First operand has 44 states, 25 states have (on average 1.92) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:34,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:34,480 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2022-11-20 19:47:34,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:47:34,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 19:47:34,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:34,492 INFO L225 Difference]: With dead ends: 105 [2022-11-20 19:47:34,492 INFO L226 Difference]: Without dead ends: 69 [2022-11-20 19:47:34,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:34,499 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 27 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:34,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 41 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:34,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-20 19:47:34,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2022-11-20 19:47:34,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.7142857142857142) internal successors, (72), 59 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:34,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2022-11-20 19:47:34,544 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 3 [2022-11-20 19:47:34,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:34,544 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2022-11-20 19:47:34,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:34,545 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2022-11-20 19:47:34,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 19:47:34,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:34,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 19:47:34,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 19:47:34,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:34,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:34,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:34,754 INFO L85 PathProgramCache]: Analyzing trace with hash 3407162, now seen corresponding path program 1 times [2022-11-20 19:47:34,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:34,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505641854] [2022-11-20 19:47:34,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:34,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:34,762 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:34,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656525813] [2022-11-20 19:47:34,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:34,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:34,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:34,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:34,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 19:47:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:34,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 19:47:34,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:34,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:34,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:47:34,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:34,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505641854] [2022-11-20 19:47:34,842 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:34,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656525813] [2022-11-20 19:47:34,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656525813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:34,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:34,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 19:47:34,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245271292] [2022-11-20 19:47:34,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:34,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:47:34,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:34,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:47:34,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:34,847 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:34,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:34,955 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2022-11-20 19:47:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:47:34,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 19:47:34,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:34,958 INFO L225 Difference]: With dead ends: 69 [2022-11-20 19:47:34,958 INFO L226 Difference]: Without dead ends: 68 [2022-11-20 19:47:34,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:34,960 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 23 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:34,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 42 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:34,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-20 19:47:34,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2022-11-20 19:47:34,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.6904761904761905) internal successors, (71), 59 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:34,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2022-11-20 19:47:34,979 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 4 [2022-11-20 19:47:34,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:34,980 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2022-11-20 19:47:34,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:34,980 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2022-11-20 19:47:34,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 19:47:34,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:34,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 19:47:34,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 19:47:35,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:35,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:35,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:35,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1020683012, now seen corresponding path program 1 times [2022-11-20 19:47:35,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:35,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875270727] [2022-11-20 19:47:35,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:35,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:35,200 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:35,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830794770] [2022-11-20 19:47:35,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:35,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:35,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:35,203 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:35,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 19:47:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:35,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:47:35,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:35,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:35,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:47:35,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:35,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875270727] [2022-11-20 19:47:35,302 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:35,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830794770] [2022-11-20 19:47:35,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830794770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:35,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:35,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 19:47:35,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064899785] [2022-11-20 19:47:35,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:35,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:47:35,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:35,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:47:35,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:35,306 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:35,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:35,372 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2022-11-20 19:47:35,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:47:35,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 19:47:35,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:35,375 INFO L225 Difference]: With dead ends: 87 [2022-11-20 19:47:35,375 INFO L226 Difference]: Without dead ends: 85 [2022-11-20 19:47:35,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:35,377 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 29 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:35,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 58 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:35,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-20 19:47:35,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2022-11-20 19:47:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 57 states have (on average 1.6842105263157894) internal successors, (96), 74 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:35,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 96 transitions. [2022-11-20 19:47:35,390 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 96 transitions. Word has length 6 [2022-11-20 19:47:35,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:35,391 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 96 transitions. [2022-11-20 19:47:35,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:35,392 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 96 transitions. [2022-11-20 19:47:35,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 19:47:35,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:35,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:35,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 19:47:35,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:35,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:35,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:35,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1576403624, now seen corresponding path program 1 times [2022-11-20 19:47:35,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:35,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145692121] [2022-11-20 19:47:35,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:35,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:35,610 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:35,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271250862] [2022-11-20 19:47:35,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:35,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:35,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:35,613 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:35,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 19:47:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:35,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 19:47:35,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:35,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:35,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:47:35,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:35,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145692121] [2022-11-20 19:47:35,749 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:35,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271250862] [2022-11-20 19:47:35,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271250862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:35,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:35,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 19:47:35,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081755121] [2022-11-20 19:47:35,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:35,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:47:35,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:35,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:47:35,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:35,754 INFO L87 Difference]: Start difference. First operand 75 states and 96 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:35,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:35,867 INFO L93 Difference]: Finished difference Result 117 states and 151 transitions. [2022-11-20 19:47:35,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:47:35,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 19:47:35,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:35,872 INFO L225 Difference]: With dead ends: 117 [2022-11-20 19:47:35,872 INFO L226 Difference]: Without dead ends: 116 [2022-11-20 19:47:35,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:35,878 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 36 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:35,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 40 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:35,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-20 19:47:35,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2022-11-20 19:47:35,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 79 states have (on average 1.6708860759493671) internal successors, (132), 96 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 132 transitions. [2022-11-20 19:47:35,904 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 132 transitions. Word has length 7 [2022-11-20 19:47:35,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:35,905 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 132 transitions. [2022-11-20 19:47:35,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:35,905 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 132 transitions. [2022-11-20 19:47:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 19:47:35,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:35,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:35,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 19:47:36,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:36,113 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:36,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:36,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1576402246, now seen corresponding path program 1 times [2022-11-20 19:47:36,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:36,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103741850] [2022-11-20 19:47:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:36,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:36,121 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:36,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628120341] [2022-11-20 19:47:36,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:36,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:36,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:36,125 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:36,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 19:47:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:36,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:47:36,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:36,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:36,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:47:36,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:36,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103741850] [2022-11-20 19:47:36,208 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:36,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628120341] [2022-11-20 19:47:36,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628120341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:36,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:36,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 19:47:36,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152478791] [2022-11-20 19:47:36,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:36,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:47:36,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:36,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:47:36,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:36,212 INFO L87 Difference]: Start difference. First operand 97 states and 132 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:36,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:36,252 INFO L93 Difference]: Finished difference Result 109 states and 145 transitions. [2022-11-20 19:47:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:47:36,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 19:47:36,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:36,255 INFO L225 Difference]: With dead ends: 109 [2022-11-20 19:47:36,256 INFO L226 Difference]: Without dead ends: 107 [2022-11-20 19:47:36,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:36,258 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 19 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:36,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 52 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:47:36,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-20 19:47:36,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2022-11-20 19:47:36,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 87 states have (on average 1.6206896551724137) internal successors, (141), 103 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:36,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 141 transitions. [2022-11-20 19:47:36,270 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 141 transitions. Word has length 7 [2022-11-20 19:47:36,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:36,270 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 141 transitions. [2022-11-20 19:47:36,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:36,271 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 141 transitions. [2022-11-20 19:47:36,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 19:47:36,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:36,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:36,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 19:47:36,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:36,479 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:36,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:36,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1623872015, now seen corresponding path program 1 times [2022-11-20 19:47:36,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:36,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315175107] [2022-11-20 19:47:36,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:36,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:36,487 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:36,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628741670] [2022-11-20 19:47:36,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:36,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:36,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:36,492 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:36,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 19:47:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:36,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 19:47:36,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:36,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:47:36,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:36,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315175107] [2022-11-20 19:47:36,595 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:36,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628741670] [2022-11-20 19:47:36,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628741670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:36,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:36,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 19:47:36,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518982738] [2022-11-20 19:47:36,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:36,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:47:36,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:36,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:47:36,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:36,598 INFO L87 Difference]: Start difference. First operand 104 states and 141 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:36,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:36,658 INFO L93 Difference]: Finished difference Result 123 states and 157 transitions. [2022-11-20 19:47:36,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:47:36,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 19:47:36,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:36,660 INFO L225 Difference]: With dead ends: 123 [2022-11-20 19:47:36,660 INFO L226 Difference]: Without dead ends: 122 [2022-11-20 19:47:36,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:36,662 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:36,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 40 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:36,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-20 19:47:36,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 104. [2022-11-20 19:47:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 87 states have (on average 1.5747126436781609) internal successors, (137), 103 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:36,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 137 transitions. [2022-11-20 19:47:36,674 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 137 transitions. Word has length 8 [2022-11-20 19:47:36,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:36,675 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 137 transitions. [2022-11-20 19:47:36,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:36,675 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 137 transitions. [2022-11-20 19:47:36,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 19:47:36,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:36,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:36,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 19:47:36,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 19:47:36,890 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:36,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:36,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1199575162, now seen corresponding path program 1 times [2022-11-20 19:47:36,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:36,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486542781] [2022-11-20 19:47:36,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:36,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:36,897 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:36,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392040148] [2022-11-20 19:47:36,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:36,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:36,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:36,900 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:36,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 19:47:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:36,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 19:47:36,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:37,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:47:37,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:37,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486542781] [2022-11-20 19:47:37,013 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:37,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392040148] [2022-11-20 19:47:37,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392040148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:37,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:37,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 19:47:37,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524886040] [2022-11-20 19:47:37,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:37,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:47:37,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:37,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:47:37,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:37,016 INFO L87 Difference]: Start difference. First operand 104 states and 137 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:37,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:37,093 INFO L93 Difference]: Finished difference Result 116 states and 145 transitions. [2022-11-20 19:47:37,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:47:37,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 19:47:37,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:37,095 INFO L225 Difference]: With dead ends: 116 [2022-11-20 19:47:37,095 INFO L226 Difference]: Without dead ends: 115 [2022-11-20 19:47:37,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:37,096 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:37,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 33 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:37,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-20 19:47:37,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 104. [2022-11-20 19:47:37,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 87 states have (on average 1.528735632183908) internal successors, (133), 103 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:37,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 133 transitions. [2022-11-20 19:47:37,106 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 133 transitions. Word has length 9 [2022-11-20 19:47:37,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:37,106 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 133 transitions. [2022-11-20 19:47:37,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:37,107 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 133 transitions. [2022-11-20 19:47:37,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 19:47:37,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:37,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:37,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-20 19:47:37,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:37,313 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:37,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:37,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1467875565, now seen corresponding path program 1 times [2022-11-20 19:47:37,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:37,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411198644] [2022-11-20 19:47:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:37,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:37,321 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:37,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650087307] [2022-11-20 19:47:37,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:37,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:37,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:37,324 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:37,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 19:47:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:37,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 19:47:37,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:37,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:37,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:47:37,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:37,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411198644] [2022-11-20 19:47:37,489 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:37,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650087307] [2022-11-20 19:47:37,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650087307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:37,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:37,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 19:47:37,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25147761] [2022-11-20 19:47:37,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:37,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:47:37,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:37,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:47:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:37,492 INFO L87 Difference]: Start difference. First operand 104 states and 133 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:37,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:37,579 INFO L93 Difference]: Finished difference Result 121 states and 149 transitions. [2022-11-20 19:47:37,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:47:37,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 19:47:37,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:37,581 INFO L225 Difference]: With dead ends: 121 [2022-11-20 19:47:37,581 INFO L226 Difference]: Without dead ends: 120 [2022-11-20 19:47:37,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:37,583 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 28 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:37,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 30 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:37,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-20 19:47:37,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 104. [2022-11-20 19:47:37,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 87 states have (on average 1.4827586206896552) internal successors, (129), 103 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:37,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 129 transitions. [2022-11-20 19:47:37,593 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 129 transitions. Word has length 10 [2022-11-20 19:47:37,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:37,593 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 129 transitions. [2022-11-20 19:47:37,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:37,594 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 129 transitions. [2022-11-20 19:47:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 19:47:37,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:37,595 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:37,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 19:47:37,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:37,802 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:37,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:37,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1282381474, now seen corresponding path program 1 times [2022-11-20 19:47:37,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:37,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111097703] [2022-11-20 19:47:37,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:37,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:37,809 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:37,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212691057] [2022-11-20 19:47:37,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:37,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:37,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:37,817 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:37,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 19:47:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:37,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 19:47:37,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:37,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:47:38,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:38,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:38,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111097703] [2022-11-20 19:47:38,232 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:38,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212691057] [2022-11-20 19:47:38,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212691057] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:47:38,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1211787192] [2022-11-20 19:47:38,258 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 19:47:38,259 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:47:38,264 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:47:38,271 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:47:38,272 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:47:38,722 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:47:39,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1211787192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:39,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:47:39,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [2, 2] total 9 [2022-11-20 19:47:39,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303140155] [2022-11-20 19:47:39,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:39,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 19:47:39,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:39,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 19:47:39,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-20 19:47:39,055 INFO L87 Difference]: Start difference. First operand 104 states and 129 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:39,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:39,833 INFO L93 Difference]: Finished difference Result 114 states and 137 transitions. [2022-11-20 19:47:39,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 19:47:39,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 19:47:39,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:39,835 INFO L225 Difference]: With dead ends: 114 [2022-11-20 19:47:39,835 INFO L226 Difference]: Without dead ends: 111 [2022-11-20 19:47:39,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-20 19:47:39,836 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 108 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:39,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 38 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:47:39,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-20 19:47:39,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 102. [2022-11-20 19:47:39,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 87 states have (on average 1.4367816091954022) internal successors, (125), 101 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:39,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2022-11-20 19:47:39,848 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 11 [2022-11-20 19:47:39,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:39,848 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2022-11-20 19:47:39,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:39,849 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2022-11-20 19:47:39,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 19:47:39,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:39,850 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:39,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 19:47:40,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 19:47:40,055 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:40,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:40,056 INFO L85 PathProgramCache]: Analyzing trace with hash 307650833, now seen corresponding path program 1 times [2022-11-20 19:47:40,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:40,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038951599] [2022-11-20 19:47:40,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:40,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:40,063 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:40,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370173544] [2022-11-20 19:47:40,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:40,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:40,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:40,066 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:40,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 19:47:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:40,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 19:47:40,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:40,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:47:40,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:40,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:40,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038951599] [2022-11-20 19:47:40,184 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:40,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370173544] [2022-11-20 19:47:40,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370173544] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:47:40,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1149274209] [2022-11-20 19:47:40,187 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 19:47:40,187 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:47:40,188 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:47:40,188 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:47:40,188 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:47:40,451 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:47:40,842 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2267#(and (<= 0 (+ |ULTIMATE.start_main_~A~0#1| 2147483648)) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (not (<= (* 2 |ULTIMATE.start_main_~d~0#1|) 2147483647)) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2022-11-20 19:47:40,843 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:47:40,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:47:40,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-20 19:47:40,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960990773] [2022-11-20 19:47:40,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 19:47:40,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:47:40,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:40,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:47:40,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:47:40,845 INFO L87 Difference]: Start difference. First operand 102 states and 125 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:40,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:40,960 INFO L93 Difference]: Finished difference Result 225 states and 266 transitions. [2022-11-20 19:47:40,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:47:40,961 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 19:47:40,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:40,962 INFO L225 Difference]: With dead ends: 225 [2022-11-20 19:47:40,963 INFO L226 Difference]: Without dead ends: 223 [2022-11-20 19:47:40,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:47:40,964 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 136 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:40,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 101 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:40,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-20 19:47:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 131. [2022-11-20 19:47:40,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 116 states have (on average 1.3879310344827587) internal successors, (161), 130 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:40,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 161 transitions. [2022-11-20 19:47:40,978 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 161 transitions. Word has length 14 [2022-11-20 19:47:40,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:40,979 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 161 transitions. [2022-11-20 19:47:40,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:40,979 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 161 transitions. [2022-11-20 19:47:40,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 19:47:40,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:40,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-20 19:47:40,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 19:47:41,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 19:47:41,187 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:41,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:41,188 INFO L85 PathProgramCache]: Analyzing trace with hash -700291181, now seen corresponding path program 1 times [2022-11-20 19:47:41,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:41,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562545177] [2022-11-20 19:47:41,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:41,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:41,195 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:41,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964403726] [2022-11-20 19:47:41,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:41,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:41,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:41,197 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:41,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 19:47:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:41,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:47:41,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:41,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:47:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:41,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:41,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562545177] [2022-11-20 19:47:41,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:41,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964403726] [2022-11-20 19:47:41,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964403726] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:47:41,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1348102976] [2022-11-20 19:47:41,319 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 19:47:41,319 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:47:41,319 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:47:41,320 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:47:41,320 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:47:41,575 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:47:41,946 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2755#(and (<= 0 (+ |ULTIMATE.start_main_~A~0#1| 2147483648)) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= (* 2 (div (- |ULTIMATE.start_main_~d~0#1|) (- 2))) 2147483647) (= |ULTIMATE.start_main_~q~0#1| 0) (not (<= (* 2 |ULTIMATE.start_main_~p~0#1|) 2147483647)) (<= 0 (+ (* 2 (div (- |ULTIMATE.start_main_~d~0#1|) (- 2))) 2147483648)) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (= |ULTIMATE.start_main_~B~0#1| 1) (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2022-11-20 19:47:41,946 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:47:41,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:47:41,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-20 19:47:41,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841983517] [2022-11-20 19:47:41,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 19:47:41,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:47:41,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:41,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:47:41,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:47:41,948 INFO L87 Difference]: Start difference. First operand 131 states and 161 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:42,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:42,078 INFO L93 Difference]: Finished difference Result 199 states and 230 transitions. [2022-11-20 19:47:42,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:47:42,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 19:47:42,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:42,080 INFO L225 Difference]: With dead ends: 199 [2022-11-20 19:47:42,080 INFO L226 Difference]: Without dead ends: 197 [2022-11-20 19:47:42,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:47:42,081 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 126 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:42,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 96 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:42,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-20 19:47:42,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 133. [2022-11-20 19:47:42,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 118 states have (on average 1.347457627118644) internal successors, (159), 132 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:42,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 159 transitions. [2022-11-20 19:47:42,094 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 159 transitions. Word has length 16 [2022-11-20 19:47:42,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:42,095 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 159 transitions. [2022-11-20 19:47:42,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:42,095 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 159 transitions. [2022-11-20 19:47:42,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 19:47:42,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:42,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:42,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 19:47:42,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:42,302 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:42,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:42,302 INFO L85 PathProgramCache]: Analyzing trace with hash 2076362757, now seen corresponding path program 1 times [2022-11-20 19:47:42,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:42,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920055480] [2022-11-20 19:47:42,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:42,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:42,311 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:42,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033613608] [2022-11-20 19:47:42,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:42,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:42,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:42,313 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:42,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 19:47:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:42,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 19:47:42,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:42,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:47:42,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:42,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920055480] [2022-11-20 19:47:42,487 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:42,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033613608] [2022-11-20 19:47:42,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033613608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:42,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:42,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:47:42,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209960879] [2022-11-20 19:47:42,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:42,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:47:42,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:42,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:47:42,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:47:42,490 INFO L87 Difference]: Start difference. First operand 133 states and 159 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:42,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:42,543 INFO L93 Difference]: Finished difference Result 133 states and 159 transitions. [2022-11-20 19:47:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:47:42,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 19:47:42,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:42,545 INFO L225 Difference]: With dead ends: 133 [2022-11-20 19:47:42,545 INFO L226 Difference]: Without dead ends: 131 [2022-11-20 19:47:42,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:47:42,546 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 38 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:42,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 33 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:47:42,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-20 19:47:42,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2022-11-20 19:47:42,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 102 states have (on average 1.3431372549019607) internal successors, (137), 114 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:42,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 137 transitions. [2022-11-20 19:47:42,558 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 137 transitions. Word has length 17 [2022-11-20 19:47:42,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:42,558 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 137 transitions. [2022-11-20 19:47:42,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:42,559 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 137 transitions. [2022-11-20 19:47:42,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 19:47:42,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:42,561 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2022-11-20 19:47:42,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 19:47:42,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:42,766 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:42,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:42,767 INFO L85 PathProgramCache]: Analyzing trace with hash -234190073, now seen corresponding path program 1 times [2022-11-20 19:47:42,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:42,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138318959] [2022-11-20 19:47:42,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:42,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:42,774 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:42,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630010675] [2022-11-20 19:47:42,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:42,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:42,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:42,777 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:42,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 19:47:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:42,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:47:42,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:42,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:47:42,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:42,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138318959] [2022-11-20 19:47:42,862 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:42,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630010675] [2022-11-20 19:47:42,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630010675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:42,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:42,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:47:42,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075071266] [2022-11-20 19:47:42,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:42,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:47:42,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:42,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:47:42,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:47:42,865 INFO L87 Difference]: Start difference. First operand 115 states and 137 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:42,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:42,930 INFO L93 Difference]: Finished difference Result 194 states and 233 transitions. [2022-11-20 19:47:42,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:47:42,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 19:47:42,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:42,932 INFO L225 Difference]: With dead ends: 194 [2022-11-20 19:47:42,932 INFO L226 Difference]: Without dead ends: 192 [2022-11-20 19:47:42,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:47:42,934 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 37 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:42,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 95 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:47:42,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-20 19:47:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 174. [2022-11-20 19:47:42,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 162 states have (on average 1.3209876543209877) internal successors, (214), 173 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:42,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 214 transitions. [2022-11-20 19:47:42,952 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 214 transitions. Word has length 17 [2022-11-20 19:47:42,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:42,954 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 214 transitions. [2022-11-20 19:47:42,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 214 transitions. [2022-11-20 19:47:42,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 19:47:42,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:42,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:42,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 19:47:43,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 19:47:43,166 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:43,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:43,167 INFO L85 PathProgramCache]: Analyzing trace with hash -57263876, now seen corresponding path program 1 times [2022-11-20 19:47:43,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:43,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65480345] [2022-11-20 19:47:43,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:43,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:43,173 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:43,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711796024] [2022-11-20 19:47:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:43,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:43,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:43,175 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:43,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 19:47:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:43,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 19:47:43,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:43,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:47:43,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:43,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65480345] [2022-11-20 19:47:43,226 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:43,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711796024] [2022-11-20 19:47:43,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711796024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:43,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:43,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:47:43,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124027662] [2022-11-20 19:47:43,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:43,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:47:43,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:43,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:47:43,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:43,229 INFO L87 Difference]: Start difference. First operand 174 states and 214 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:43,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:43,275 INFO L93 Difference]: Finished difference Result 174 states and 214 transitions. [2022-11-20 19:47:43,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:47:43,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 19:47:43,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:43,277 INFO L225 Difference]: With dead ends: 174 [2022-11-20 19:47:43,278 INFO L226 Difference]: Without dead ends: 173 [2022-11-20 19:47:43,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:43,279 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:43,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:47:43,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-20 19:47:43,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-11-20 19:47:43,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 162 states have (on average 1.2962962962962963) internal successors, (210), 172 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:43,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 210 transitions. [2022-11-20 19:47:43,297 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 210 transitions. Word has length 18 [2022-11-20 19:47:43,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:43,298 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 210 transitions. [2022-11-20 19:47:43,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:43,298 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 210 transitions. [2022-11-20 19:47:43,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 19:47:43,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:43,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:43,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 19:47:43,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:43,505 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:43,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:43,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1775180057, now seen corresponding path program 1 times [2022-11-20 19:47:43,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:43,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192611517] [2022-11-20 19:47:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:43,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:43,511 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:43,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322072070] [2022-11-20 19:47:43,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:43,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:43,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:43,513 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:43,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 19:47:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:43,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 19:47:43,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:43,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:47:43,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:43,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192611517] [2022-11-20 19:47:43,656 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:43,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322072070] [2022-11-20 19:47:43,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322072070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:43,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:43,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:47:43,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239446787] [2022-11-20 19:47:43,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:43,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:47:43,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:43,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:47:43,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:47:43,659 INFO L87 Difference]: Start difference. First operand 173 states and 210 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:43,761 INFO L93 Difference]: Finished difference Result 216 states and 256 transitions. [2022-11-20 19:47:43,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:47:43,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 19:47:43,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:43,764 INFO L225 Difference]: With dead ends: 216 [2022-11-20 19:47:43,764 INFO L226 Difference]: Without dead ends: 215 [2022-11-20 19:47:43,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:47:43,767 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:43,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 45 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:43,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-20 19:47:43,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 209. [2022-11-20 19:47:43,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 198 states have (on average 1.2878787878787878) internal successors, (255), 208 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 255 transitions. [2022-11-20 19:47:43,790 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 255 transitions. Word has length 19 [2022-11-20 19:47:43,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:43,790 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 255 transitions. [2022-11-20 19:47:43,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:43,791 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 255 transitions. [2022-11-20 19:47:43,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 19:47:43,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:43,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:43,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 19:47:43,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 19:47:44,000 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:44,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:44,000 INFO L85 PathProgramCache]: Analyzing trace with hash 803993182, now seen corresponding path program 1 times [2022-11-20 19:47:44,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:44,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075835501] [2022-11-20 19:47:44,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:44,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:44,007 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:44,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519550325] [2022-11-20 19:47:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:44,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:44,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:44,009 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:44,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 19:47:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:44,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 19:47:44,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:44,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:47:44,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:44,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075835501] [2022-11-20 19:47:44,228 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:44,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519550325] [2022-11-20 19:47:44,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519550325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:44,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:44,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:47:44,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669168482] [2022-11-20 19:47:44,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:44,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:47:44,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:44,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:47:44,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:47:44,231 INFO L87 Difference]: Start difference. First operand 209 states and 255 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:44,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:44,307 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2022-11-20 19:47:44,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:47:44,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-20 19:47:44,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:44,309 INFO L225 Difference]: With dead ends: 225 [2022-11-20 19:47:44,309 INFO L226 Difference]: Without dead ends: 223 [2022-11-20 19:47:44,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:47:44,310 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:44,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 38 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:44,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-20 19:47:44,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 191. [2022-11-20 19:47:44,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 180 states have (on average 1.2944444444444445) internal successors, (233), 190 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 233 transitions. [2022-11-20 19:47:44,329 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 233 transitions. Word has length 20 [2022-11-20 19:47:44,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:44,329 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 233 transitions. [2022-11-20 19:47:44,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:44,330 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 233 transitions. [2022-11-20 19:47:44,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 19:47:44,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:44,330 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:44,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 19:47:44,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 19:47:44,536 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:44,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:44,537 INFO L85 PathProgramCache]: Analyzing trace with hash -456663168, now seen corresponding path program 1 times [2022-11-20 19:47:44,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:44,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492332670] [2022-11-20 19:47:44,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:44,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:44,549 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:44,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908888859] [2022-11-20 19:47:44,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:44,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:44,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:44,556 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:44,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 19:47:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:44,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 19:47:44,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:44,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 19:47:44,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:47:44,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:44,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492332670] [2022-11-20 19:47:44,641 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:44,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908888859] [2022-11-20 19:47:44,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908888859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:47:44,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:47:44,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:47:44,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238198636] [2022-11-20 19:47:44,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:47:44,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:47:44,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:47:44,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:47:44,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:44,643 INFO L87 Difference]: Start difference. First operand 191 states and 233 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:44,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:47:44,711 INFO L93 Difference]: Finished difference Result 197 states and 233 transitions. [2022-11-20 19:47:44,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:47:44,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 19:47:44,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:47:44,713 INFO L225 Difference]: With dead ends: 197 [2022-11-20 19:47:44,713 INFO L226 Difference]: Without dead ends: 161 [2022-11-20 19:47:44,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:47:44,715 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:47:44,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 33 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:47:44,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-20 19:47:44,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-11-20 19:47:44,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 150 states have (on average 1.2933333333333332) internal successors, (194), 160 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:44,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 194 transitions. [2022-11-20 19:47:44,730 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 194 transitions. Word has length 22 [2022-11-20 19:47:44,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:47:44,731 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 194 transitions. [2022-11-20 19:47:44,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:47:44,731 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 194 transitions. [2022-11-20 19:47:44,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 19:47:44,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:47:44,732 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:47:44,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 19:47:44,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 19:47:44,939 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:47:44,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:47:44,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1542181646, now seen corresponding path program 1 times [2022-11-20 19:47:44,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:47:44,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31617444] [2022-11-20 19:47:44,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:44,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:47:44,948 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:47:44,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563440531] [2022-11-20 19:47:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:47:44,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:47:44,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:44,950 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:47:44,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 19:47:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:47:44,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 19:47:45,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:47:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:45,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:47:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:47:45,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:47:45,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31617444] [2022-11-20 19:47:45,354 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:47:45,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563440531] [2022-11-20 19:47:45,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563440531] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:47:45,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1903884430] [2022-11-20 19:47:45,357 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-20 19:47:45,358 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:47:45,358 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:47:45,358 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:47:45,359 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:47:45,859 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:48:25,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1903884430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:48:25,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:48:25,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [3, 2] total 19 [2022-11-20 19:48:25,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125186264] [2022-11-20 19:48:25,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:48:25,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 19:48:25,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:48:25,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 19:48:25,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=334, Unknown=6, NotChecked=0, Total=420 [2022-11-20 19:48:25,121 INFO L87 Difference]: Start difference. First operand 161 states and 194 transitions. Second operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:48:35,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:48:35,677 INFO L93 Difference]: Finished difference Result 162 states and 194 transitions. [2022-11-20 19:48:35,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 19:48:35,678 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-20 19:48:35,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:48:35,679 INFO L225 Difference]: With dead ends: 162 [2022-11-20 19:48:35,679 INFO L226 Difference]: Without dead ends: 161 [2022-11-20 19:48:35,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 50 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 49.3s TimeCoverageRelationStatistics Valid=139, Invalid=608, Unknown=9, NotChecked=0, Total=756 [2022-11-20 19:48:35,680 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 37 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:48:35,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 56 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 233 Invalid, 0 Unknown, 163 Unchecked, 0.5s Time] [2022-11-20 19:48:35,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-20 19:48:35,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-11-20 19:48:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 150 states have (on average 1.28) internal successors, (192), 160 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:48:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 192 transitions. [2022-11-20 19:48:35,696 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 192 transitions. Word has length 27 [2022-11-20 19:48:35,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:48:35,697 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 192 transitions. [2022-11-20 19:48:35,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:48:35,697 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 192 transitions. [2022-11-20 19:48:35,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 19:48:35,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:48:35,698 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:48:35,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-20 19:48:35,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 19:48:35,905 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:48:35,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:48:35,905 INFO L85 PathProgramCache]: Analyzing trace with hash 131848597, now seen corresponding path program 1 times [2022-11-20 19:48:35,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:48:35,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522580716] [2022-11-20 19:48:35,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:48:35,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:48:35,919 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:48:35,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785279147] [2022-11-20 19:48:35,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:48:35,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:48:35,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:48:35,922 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:48:35,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 19:48:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:48:35,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 19:48:35,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:48:36,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:48:36,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:48:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:48:37,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:48:37,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522580716] [2022-11-20 19:48:37,530 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:48:37,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785279147] [2022-11-20 19:48:37,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785279147] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:48:37,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1272266239] [2022-11-20 19:48:37,535 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-20 19:48:37,535 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:48:37,536 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:48:37,537 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:48:37,537 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:48:38,943 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:49:04,713 WARN L233 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 56 DAG size of output: 52 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:49:04,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1272266239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:04,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:49:04,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [4, 3] total 24 [2022-11-20 19:49:04,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576759610] [2022-11-20 19:49:04,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:04,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 19:49:04,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:49:04,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 19:49:04,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=467, Unknown=4, NotChecked=0, Total=650 [2022-11-20 19:49:04,917 INFO L87 Difference]: Start difference. First operand 161 states and 192 transitions. Second operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:49:26,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:26,802 INFO L93 Difference]: Finished difference Result 199 states and 240 transitions. [2022-11-20 19:49:26,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 19:49:26,803 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-20 19:49:26,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:26,804 INFO L225 Difference]: With dead ends: 199 [2022-11-20 19:49:26,804 INFO L226 Difference]: Without dead ends: 196 [2022-11-20 19:49:26,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 47.8s TimeCoverageRelationStatistics Valid=304, Invalid=740, Unknown=12, NotChecked=0, Total=1056 [2022-11-20 19:49:26,806 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 114 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:26,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 57 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 178 Invalid, 0 Unknown, 37 Unchecked, 0.4s Time] [2022-11-20 19:49:26,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-20 19:49:26,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 188. [2022-11-20 19:49:26,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 178 states have (on average 1.2865168539325842) internal successors, (229), 187 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:49:26,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 229 transitions. [2022-11-20 19:49:26,822 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 229 transitions. Word has length 30 [2022-11-20 19:49:26,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:26,823 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 229 transitions. [2022-11-20 19:49:26,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:49:26,823 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 229 transitions. [2022-11-20 19:49:26,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 19:49:26,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:26,824 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:26,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 19:49:27,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:49:27,036 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:49:27,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:27,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2142514825, now seen corresponding path program 1 times [2022-11-20 19:49:27,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:49:27,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253816746] [2022-11-20 19:49:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:27,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:49:27,046 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:49:27,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225844058] [2022-11-20 19:49:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:27,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:49:27,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:49:27,049 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:49:27,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 19:49:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:27,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 19:49:27,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:49:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:27,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:49:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:32,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:49:32,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253816746] [2022-11-20 19:49:32,715 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:49:32,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225844058] [2022-11-20 19:49:32,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225844058] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:49:32,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1708849562] [2022-11-20 19:49:32,718 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-20 19:49:32,718 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:49:32,719 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:49:32,719 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:49:32,719 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:49:35,518 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:49:52,009 WARN L233 SmtUtils]: Spent 10.15s on a formula simplification. DAG size of input: 64 DAG size of output: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:50:02,412 WARN L233 SmtUtils]: Spent 8.21s on a formula simplification. DAG size of input: 73 DAG size of output: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:50:24,799 WARN L233 SmtUtils]: Spent 16.18s on a formula simplification. DAG size of input: 79 DAG size of output: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:50:25,069 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7179#(and (<= 0 (+ |ULTIMATE.start_main_~A~0#1| 2147483648)) (not (<= (+ (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) 2147483647)) (<= 0 (+ |ULTIMATE.start_main_~q~0#1| 2147483648)) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (= |ULTIMATE.start_main_~B~0#1| 1) (<= |ULTIMATE.start_main_~q~0#1| 2147483647))' at error location [2022-11-20 19:50:25,070 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:50:25,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:50:25,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2022-11-20 19:50:25,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885332421] [2022-11-20 19:50:25,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 19:50:25,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 19:50:25,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:50:25,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 19:50:25,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=877, Unknown=4, NotChecked=0, Total=1056 [2022-11-20 19:50:25,072 INFO L87 Difference]: Start difference. First operand 188 states and 229 transitions. Second operand has 15 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:50:42,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:50:42,069 INFO L93 Difference]: Finished difference Result 284 states and 339 transitions. [2022-11-20 19:50:42,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 19:50:42,069 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-20 19:50:42,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:50:42,071 INFO L225 Difference]: With dead ends: 284 [2022-11-20 19:50:42,071 INFO L226 Difference]: Without dead ends: 207 [2022-11-20 19:50:42,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 56 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 69.7s TimeCoverageRelationStatistics Valid=190, Invalid=993, Unknown=7, NotChecked=0, Total=1190 [2022-11-20 19:50:42,073 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 46 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:50:42,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 54 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 109 Unchecked, 0.1s Time] [2022-11-20 19:50:42,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-20 19:50:42,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-11-20 19:50:42,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 197 states have (on average 1.2588832487309645) internal successors, (248), 206 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:50:42,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 248 transitions. [2022-11-20 19:50:42,094 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 248 transitions. Word has length 32 [2022-11-20 19:50:42,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:50:42,094 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 248 transitions. [2022-11-20 19:50:42,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:50:42,095 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 248 transitions. [2022-11-20 19:50:42,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 19:50:42,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:50:42,096 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1] [2022-11-20 19:50:42,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 19:50:42,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-11-20 19:50:42,307 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:50:42,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:50:42,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2058924208, now seen corresponding path program 2 times [2022-11-20 19:50:42,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:50:42,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625023861] [2022-11-20 19:50:42,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:50:42,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:50:42,314 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:50:42,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007353643] [2022-11-20 19:50:42,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 19:50:42,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:50:42,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:50:42,316 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:50:42,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 19:50:42,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-20 19:50:42,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:50:42,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 19:50:42,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:50:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:50:42,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:50:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:50:42,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:50:42,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625023861] [2022-11-20 19:50:42,691 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:50:42,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007353643] [2022-11-20 19:50:42,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007353643] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:50:42,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [585939602] [2022-11-20 19:50:42,693 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 19:50:42,694 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:50:42,694 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:50:42,694 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:50:42,694 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:50:42,885 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:50:43,772 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7965#(and (<= 0 (+ |ULTIMATE.start_main_~A~0#1| 2147483648)) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (not (<= (* 2 |ULTIMATE.start_main_~d~0#1|) 2147483647)) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2022-11-20 19:50:43,773 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:50:43,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:50:43,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-20 19:50:43,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325870706] [2022-11-20 19:50:43,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 19:50:43,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 19:50:43,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:50:43,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 19:50:43,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-11-20 19:50:43,775 INFO L87 Difference]: Start difference. First operand 207 states and 248 transitions. Second operand has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:50:44,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:50:44,119 INFO L93 Difference]: Finished difference Result 758 states and 910 transitions. [2022-11-20 19:50:44,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 19:50:44,120 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-11-20 19:50:44,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:50:44,123 INFO L225 Difference]: With dead ends: 758 [2022-11-20 19:50:44,123 INFO L226 Difference]: Without dead ends: 756 [2022-11-20 19:50:44,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 86 SyntacticMatches, 10 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-11-20 19:50:44,125 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 408 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:50:44,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 259 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 19:50:44,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-11-20 19:50:44,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 325. [2022-11-20 19:50:44,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 315 states have (on average 1.2571428571428571) internal successors, (396), 324 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:50:44,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 396 transitions. [2022-11-20 19:50:44,163 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 396 transitions. Word has length 38 [2022-11-20 19:50:44,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:50:44,164 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 396 transitions. [2022-11-20 19:50:44,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:50:44,164 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 396 transitions. [2022-11-20 19:50:44,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 19:50:44,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:50:44,165 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:50:44,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 19:50:44,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 19:50:44,371 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:50:44,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:50:44,371 INFO L85 PathProgramCache]: Analyzing trace with hash -380849023, now seen corresponding path program 1 times [2022-11-20 19:50:44,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:50:44,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567207688] [2022-11-20 19:50:44,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:50:44,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:50:44,379 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:50:44,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850293653] [2022-11-20 19:50:44,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:50:44,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:50:44,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:50:44,381 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:50:44,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 19:50:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:50:44,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 19:50:44,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:50:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 19:50:44,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:50:44,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:50:44,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567207688] [2022-11-20 19:50:44,497 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:50:44,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850293653] [2022-11-20 19:50:44,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850293653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:50:44,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:50:44,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:50:44,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319257957] [2022-11-20 19:50:44,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:50:44,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:50:44,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:50:44,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:50:44,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:50:44,499 INFO L87 Difference]: Start difference. First operand 325 states and 396 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:50:44,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:50:44,714 INFO L93 Difference]: Finished difference Result 337 states and 411 transitions. [2022-11-20 19:50:44,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:50:44,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-20 19:50:44,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:50:44,717 INFO L225 Difference]: With dead ends: 337 [2022-11-20 19:50:44,717 INFO L226 Difference]: Without dead ends: 335 [2022-11-20 19:50:44,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:50:44,718 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 22 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:50:44,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 94 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:50:44,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-20 19:50:44,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 333. [2022-11-20 19:50:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 324 states have (on average 1.2314814814814814) internal successors, (399), 332 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:50:44,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 399 transitions. [2022-11-20 19:50:44,752 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 399 transitions. Word has length 41 [2022-11-20 19:50:44,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:50:44,753 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 399 transitions. [2022-11-20 19:50:44,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:50:44,753 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 399 transitions. [2022-11-20 19:50:44,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 19:50:44,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:50:44,754 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:50:44,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 19:50:44,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:50:44,961 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:50:44,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:50:44,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1372591359, now seen corresponding path program 1 times [2022-11-20 19:50:44,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:50:44,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409618950] [2022-11-20 19:50:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:50:44,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:50:44,971 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:50:44,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2015887883] [2022-11-20 19:50:44,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:50:44,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:50:44,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:50:44,974 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:50:45,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 19:50:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:50:45,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 19:50:45,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:50:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:50:45,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:50:46,673 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:50:46,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:50:46,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409618950] [2022-11-20 19:50:46,674 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:50:46,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015887883] [2022-11-20 19:50:46,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015887883] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:50:46,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2118846782] [2022-11-20 19:50:46,676 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-20 19:50:46,677 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:50:46,677 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:50:46,677 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:50:46,678 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:50:47,291 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:51:10,537 WARN L233 SmtUtils]: Spent 8.08s on a formula simplification. DAG size of input: 56 DAG size of output: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:51:18,396 WARN L233 SmtUtils]: Spent 7.72s on a formula simplification. DAG size of input: 57 DAG size of output: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:51:26,587 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 59 DAG size of output: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:51:34,215 WARN L233 SmtUtils]: Spent 7.54s on a formula simplification. DAG size of input: 57 DAG size of output: 52 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:51:34,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2118846782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:51:34,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:51:34,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 3] total 20 [2022-11-20 19:51:34,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806418493] [2022-11-20 19:51:34,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:51:34,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 19:51:34,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:51:34,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 19:51:34,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=352, Unknown=2, NotChecked=0, Total=462 [2022-11-20 19:51:34,219 INFO L87 Difference]: Start difference. First operand 333 states and 399 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:51:46,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:51:46,692 INFO L93 Difference]: Finished difference Result 334 states and 399 transitions. [2022-11-20 19:51:46,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 19:51:46,693 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-11-20 19:51:46,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:51:46,694 INFO L225 Difference]: With dead ends: 334 [2022-11-20 19:51:46,695 INFO L226 Difference]: Without dead ends: 333 [2022-11-20 19:51:46,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 103 SyntacticMatches, 14 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 59.4s TimeCoverageRelationStatistics Valid=132, Invalid=463, Unknown=5, NotChecked=0, Total=600 [2022-11-20 19:51:46,696 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 27 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:51:46,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 39 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 46 Unchecked, 0.3s Time] [2022-11-20 19:51:46,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-20 19:51:46,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2022-11-20 19:51:46,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 324 states have (on average 1.2222222222222223) internal successors, (396), 332 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:51:46,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 396 transitions. [2022-11-20 19:51:46,732 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 396 transitions. Word has length 46 [2022-11-20 19:51:46,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:51:46,732 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 396 transitions. [2022-11-20 19:51:46,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:51:46,733 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 396 transitions. [2022-11-20 19:51:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 19:51:46,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:51:46,733 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:51:46,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-20 19:51:46,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:51:46,940 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:51:46,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:51:46,940 INFO L85 PathProgramCache]: Analyzing trace with hash 459073643, now seen corresponding path program 1 times [2022-11-20 19:51:46,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:51:46,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172262277] [2022-11-20 19:51:46,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:51:46,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:51:46,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:51:46,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326183867] [2022-11-20 19:51:46,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:51:46,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:51:46,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:51:46,949 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:51:46,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 19:51:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:51:46,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 19:51:46,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:51:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:51:47,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:51:47,390 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:51:47,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:51:47,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172262277] [2022-11-20 19:51:47,391 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:51:47,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326183867] [2022-11-20 19:51:47,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326183867] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:51:47,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1013879469] [2022-11-20 19:51:47,393 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-20 19:51:47,393 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:51:47,394 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:51:47,394 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:51:47,394 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:51:47,614 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:51:58,194 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11309#(and (not (<= (ite (and (< |ULTIMATE.start_main_~p~0#1| 0) (not (= (mod |ULTIMATE.start_main_~p~0#1| 2) 0))) (+ (div |ULTIMATE.start_main_~p~0#1| 2) 1) (div |ULTIMATE.start_main_~p~0#1| 2)) 2147483647)) (= |ULTIMATE.start_main_~A~0#1| (+ (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|)) (exists ((|v_ULTIMATE.start_main_~d~0#1_104| Int)) (and (<= 0 (+ (ite (and (< |v_ULTIMATE.start_main_~d~0#1_104| 0) (not (= (mod |v_ULTIMATE.start_main_~d~0#1_104| 2) 0))) (+ (div |v_ULTIMATE.start_main_~d~0#1_104| 2) 1) (div |v_ULTIMATE.start_main_~d~0#1_104| 2)) 2147483648)) (<= (ite (and (< |v_ULTIMATE.start_main_~d~0#1_104| 0) (not (= (mod |v_ULTIMATE.start_main_~d~0#1_104| 2) 0))) (+ (div |v_ULTIMATE.start_main_~d~0#1_104| 2) 1) (div |v_ULTIMATE.start_main_~d~0#1_104| 2)) 2147483647) (= |ULTIMATE.start_main_~d~0#1| (ite (and (< |v_ULTIMATE.start_main_~d~0#1_104| 0) (not (= (mod |v_ULTIMATE.start_main_~d~0#1_104| 2) 0))) (+ (div |v_ULTIMATE.start_main_~d~0#1_104| 2) 1) (div |v_ULTIMATE.start_main_~d~0#1_104| 2))) (not (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |v_ULTIMATE.start_main_~d~0#1_104|)))) (<= |ULTIMATE.start_main_~B~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~B~0#1|) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2022-11-20 19:51:58,194 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:51:58,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:51:58,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-20 19:51:58,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846348580] [2022-11-20 19:51:58,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 19:51:58,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 19:51:58,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:51:58,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 19:51:58,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=363, Unknown=1, NotChecked=0, Total=462 [2022-11-20 19:51:58,197 INFO L87 Difference]: Start difference. First operand 333 states and 396 transitions. Second operand has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:51:58,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:51:58,658 INFO L93 Difference]: Finished difference Result 805 states and 962 transitions. [2022-11-20 19:51:58,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 19:51:58,659 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-11-20 19:51:58,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:51:58,663 INFO L225 Difference]: With dead ends: 805 [2022-11-20 19:51:58,663 INFO L226 Difference]: Without dead ends: 803 [2022-11-20 19:51:58,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 102 SyntacticMatches, 14 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=98, Invalid=363, Unknown=1, NotChecked=0, Total=462 [2022-11-20 19:51:58,665 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 345 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:51:58,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 466 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:51:58,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-20 19:51:58,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 428. [2022-11-20 19:51:58,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 420 states have (on average 1.1928571428571428) internal successors, (501), 427 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:51:58,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 501 transitions. [2022-11-20 19:51:58,709 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 501 transitions. Word has length 46 [2022-11-20 19:51:58,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:51:58,709 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 501 transitions. [2022-11-20 19:51:58,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:51:58,710 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 501 transitions. [2022-11-20 19:51:58,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 19:51:58,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:51:58,711 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:51:58,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-11-20 19:51:58,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-20 19:51:58,917 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:51:58,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:51:58,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1682607071, now seen corresponding path program 2 times [2022-11-20 19:51:58,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:51:58,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97452820] [2022-11-20 19:51:58,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:51:58,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:51:58,924 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:51:58,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505673065] [2022-11-20 19:51:58,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 19:51:58,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:51:58,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:51:58,926 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:51:58,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-20 19:51:58,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 19:51:58,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:51:58,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 19:51:58,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:51:59,144 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 19:51:59,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:51:59,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:51:59,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97452820] [2022-11-20 19:51:59,145 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:51:59,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505673065] [2022-11-20 19:51:59,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505673065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:51:59,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:51:59,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 19:51:59,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096929876] [2022-11-20 19:51:59,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:51:59,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:51:59,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:51:59,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:51:59,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:51:59,148 INFO L87 Difference]: Start difference. First operand 428 states and 501 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:51:59,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:51:59,241 INFO L93 Difference]: Finished difference Result 428 states and 501 transitions. [2022-11-20 19:51:59,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:51:59,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-20 19:51:59,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:51:59,243 INFO L225 Difference]: With dead ends: 428 [2022-11-20 19:51:59,243 INFO L226 Difference]: Without dead ends: 87 [2022-11-20 19:51:59,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:51:59,249 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:51:59,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:51:59,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-20 19:51:59,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-11-20 19:51:59,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.0116279069767442) internal successors, (87), 86 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:51:59,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2022-11-20 19:51:59,269 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 48 [2022-11-20 19:51:59,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:51:59,269 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2022-11-20 19:51:59,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:51:59,270 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2022-11-20 19:51:59,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 19:51:59,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:51:59,271 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1] [2022-11-20 19:51:59,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-20 19:51:59,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:51:59,477 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:51:59,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:51:59,477 INFO L85 PathProgramCache]: Analyzing trace with hash 984286414, now seen corresponding path program 3 times [2022-11-20 19:51:59,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:51:59,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279499539] [2022-11-20 19:51:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:51:59,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:51:59,497 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:51:59,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387260985] [2022-11-20 19:51:59,498 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 19:51:59,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:51:59,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:51:59,504 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:51:59,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-20 19:51:59,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 19:51:59,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:51:59,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 19:51:59,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:51:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:51:59,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:52:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:52:00,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:52:00,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279499539] [2022-11-20 19:52:00,469 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:52:00,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387260985] [2022-11-20 19:52:00,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387260985] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:52:00,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1354055275] [2022-11-20 19:52:00,471 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 19:52:00,471 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:52:00,472 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:52:00,472 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:52:00,472 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:52:00,614 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:52:02,194 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13907#(and (<= 0 (+ |ULTIMATE.start_main_~A~0#1| 2147483648)) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (not (<= (* 2 |ULTIMATE.start_main_~d~0#1|) 2147483647)) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2022-11-20 19:52:02,194 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:52:02,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:52:02,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-20 19:52:02,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439913092] [2022-11-20 19:52:02,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 19:52:02,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 19:52:02,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:52:02,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 19:52:02,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2022-11-20 19:52:02,197 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand has 24 states, 23 states have (on average 7.478260869565218) internal successors, (172), 23 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:52:02,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:52:02,413 INFO L93 Difference]: Finished difference Result 184 states and 195 transitions. [2022-11-20 19:52:02,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 19:52:02,414 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 7.478260869565218) internal successors, (172), 23 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-20 19:52:02,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:52:02,415 INFO L225 Difference]: With dead ends: 184 [2022-11-20 19:52:02,415 INFO L226 Difference]: Without dead ends: 183 [2022-11-20 19:52:02,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 206 SyntacticMatches, 22 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2022-11-20 19:52:02,417 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 55 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:52:02,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 116 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:52:02,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-20 19:52:02,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-11-20 19:52:02,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.0054945054945055) internal successors, (183), 182 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:52:02,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2022-11-20 19:52:02,466 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 86 [2022-11-20 19:52:02,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:52:02,467 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2022-11-20 19:52:02,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 7.478260869565218) internal successors, (172), 23 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:52:02,468 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2022-11-20 19:52:02,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-20 19:52:02,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:52:02,475 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1] [2022-11-20 19:52:02,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-20 19:52:02,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 19:52:02,682 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:52:02,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:52:02,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1660801994, now seen corresponding path program 4 times [2022-11-20 19:52:02,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:52:02,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534845159] [2022-11-20 19:52:02,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:52:02,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:52:02,693 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:52:02,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512956712] [2022-11-20 19:52:02,694 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 19:52:02,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:52:02,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:52:02,696 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:52:02,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-20 19:52:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:52:02,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 19:52:02,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:52:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 0 proven. 1958 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:52:03,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:52:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 0 proven. 1958 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:52:05,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:52:05,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534845159] [2022-11-20 19:52:05,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 19:52:05,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512956712] [2022-11-20 19:52:05,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512956712] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:52:05,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [763875864] [2022-11-20 19:52:05,011 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 19:52:05,011 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:52:05,011 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:52:05,011 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:52:05,012 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:52:05,154 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:52:09,875 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15460#(and (<= 0 (+ |ULTIMATE.start_main_~A~0#1| 2147483648)) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (not (<= (* 2 |ULTIMATE.start_main_~d~0#1|) 2147483647)) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2022-11-20 19:52:09,875 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 19:52:09,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 19:52:09,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2022-11-20 19:52:09,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885898536] [2022-11-20 19:52:09,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 19:52:09,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-20 19:52:09,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:52:09,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-20 19:52:09,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2022-11-20 19:52:09,881 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand has 48 states, 47 states have (on average 7.74468085106383) internal successors, (364), 47 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:52:10,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:52:10,184 INFO L93 Difference]: Finished difference Result 248 states and 255 transitions. [2022-11-20 19:52:10,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 19:52:10,185 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 7.74468085106383) internal successors, (364), 47 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2022-11-20 19:52:10,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:52:10,186 INFO L225 Difference]: With dead ends: 248 [2022-11-20 19:52:10,187 INFO L226 Difference]: Without dead ends: 247 [2022-11-20 19:52:10,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 446 SyntacticMatches, 46 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4280 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2022-11-20 19:52:10,188 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 44 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:52:10,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 201 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:52:10,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-20 19:52:10,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2022-11-20 19:52:10,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.0040650406504066) internal successors, (247), 246 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:52:10,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2022-11-20 19:52:10,229 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 182 [2022-11-20 19:52:10,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:52:10,230 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2022-11-20 19:52:10,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 7.74468085106383) internal successors, (364), 47 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:52:10,231 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2022-11-20 19:52:10,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-20 19:52:10,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:52:10,234 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1] [2022-11-20 19:52:10,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-20 19:52:10,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 19:52:10,441 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 19:52:10,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:52:10,441 INFO L85 PathProgramCache]: Analyzing trace with hash -769820558, now seen corresponding path program 5 times [2022-11-20 19:52:10,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:52:10,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803473252] [2022-11-20 19:52:10,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:52:10,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:52:10,456 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 19:52:10,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187250484] [2022-11-20 19:52:10,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 19:52:10,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:52:10,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:52:10,459 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:52:10,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-20 19:52:10,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 31 check-sat command(s) [2022-11-20 19:52:10,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-20 19:52:10,612 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 19:52:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 19:52:10,753 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 19:52:10,754 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 19:52:10,755 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-20 19:52:10,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-20 19:52:10,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-20 19:52:10,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-20 19:52:10,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-20 19:52:10,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-20 19:52:10,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-20 19:52:10,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-20 19:52:10,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-20 19:52:10,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-20 19:52:10,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-20 19:52:10,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-20 19:52:10,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-20 19:52:10,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-20 19:52:10,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-20 19:52:10,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-20 19:52:10,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-20 19:52:10,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-20 19:52:10,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-20 19:52:10,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 19:52:10,973 INFO L444 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:52:10,979 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 19:52:11,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:52:11 BoogieIcfgContainer [2022-11-20 19:52:11,079 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 19:52:11,095 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 19:52:11,095 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 19:52:11,095 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 19:52:11,095 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:47:33" (3/4) ... [2022-11-20 19:52:11,097 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 19:52:11,195 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 19:52:11,195 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 19:52:11,196 INFO L158 Benchmark]: Toolchain (without parser) took 278265.56ms. Allocated memory was 117.4MB in the beginning and 180.4MB in the end (delta: 62.9MB). Free memory was 58.9MB in the beginning and 144.8MB in the end (delta: -85.8MB). Peak memory consumption was 82.5MB. Max. memory is 16.1GB. [2022-11-20 19:52:11,196 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:52:11,197 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.04ms. Allocated memory was 117.4MB in the beginning and 148.9MB in the end (delta: 31.5MB). Free memory was 58.8MB in the beginning and 113.1MB in the end (delta: -54.3MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2022-11-20 19:52:11,197 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.35ms. Allocated memory is still 148.9MB. Free memory was 113.1MB in the beginning and 111.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:52:11,197 INFO L158 Benchmark]: Boogie Preprocessor took 34.42ms. Allocated memory is still 148.9MB. Free memory was 111.5MB in the beginning and 110.6MB in the end (delta: 866.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:52:11,198 INFO L158 Benchmark]: RCFGBuilder took 422.17ms. Allocated memory is still 148.9MB. Free memory was 110.6MB in the beginning and 98.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 19:52:11,198 INFO L158 Benchmark]: TraceAbstraction took 277255.55ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 97.2MB in the beginning and 47.5MB in the end (delta: 49.7MB). Peak memory consumption was 79.5MB. Max. memory is 16.1GB. [2022-11-20 19:52:11,199 INFO L158 Benchmark]: Witness Printer took 100.65ms. Allocated memory is still 180.4MB. Free memory was 47.5MB in the beginning and 144.8MB in the end (delta: -97.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 19:52:11,201 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.04ms. Allocated memory was 117.4MB in the beginning and 148.9MB in the end (delta: 31.5MB). Free memory was 58.8MB in the beginning and 113.1MB in the end (delta: -54.3MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.35ms. Allocated memory is still 148.9MB. Free memory was 113.1MB in the beginning and 111.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.42ms. Allocated memory is still 148.9MB. Free memory was 111.5MB in the beginning and 110.6MB in the end (delta: 866.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 422.17ms. Allocated memory is still 148.9MB. Free memory was 110.6MB in the beginning and 98.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 277255.55ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 97.2MB in the beginning and 47.5MB in the end (delta: 49.7MB). Peak memory consumption was 79.5MB. Max. memory is 16.1GB. * Witness Printer took 100.65ms. Allocated memory is still 180.4MB. Free memory was 47.5MB in the beginning and 144.8MB in the end (delta: -97.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 39]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int A, B; [L24] int r, d, p, q; [L25] A = __VERIFIER_nondet_int() [L26] B = 1 [L28] r = A [L29] d = B [L30] p = 1 [L31] q = 0 VAL [A=0, B=1, d=1, p=1, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=1, p=1, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=1, p=1, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=1, p=1, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=2, p=1, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=2, p=2, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=2, p=2, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=2, p=2, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=2, p=2, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=4, p=2, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=4, p=4, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=4, p=4, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=4, p=4, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=4, p=4, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=8, p=4, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=8, p=8, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=8, p=8, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=8, p=8, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=8, p=8, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=16, p=8, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=16, p=16, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=16, p=16, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=16, p=16, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=16, p=16, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=32, p=16, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=32, p=32, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=32, p=32, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=32, p=32, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=32, p=32, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=64, p=32, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=64, p=64, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=64, p=64, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=64, p=64, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=64, p=64, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=128, p=64, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=128, p=128, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=128, p=128, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=128, p=128, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=128, p=128, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=256, p=128, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=256, p=256, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=256, p=256, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=256, p=256, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=256, p=256, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=512, p=256, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=512, p=512, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=512, p=512, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=512, p=512, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=512, p=512, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=1024, p=512, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=1024, p=1024, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=1024, p=1024, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=1024, p=1024, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=1024, p=1024, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=2048, p=1024, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=2048, p=2048, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=2048, p=2048, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=2048, p=2048, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=2048, p=2048, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=4096, p=2048, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=4096, p=4096, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=4096, p=4096, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=4096, p=4096, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=4096, p=4096, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=8192, p=4096, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=8192, p=8192, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=8192, p=8192, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=8192, p=8192, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=8192, p=8192, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=16384, p=8192, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=16384, p=16384, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=16384, p=16384, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=16384, p=16384, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=16384, p=16384, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=32768, p=16384, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=32768, p=32768, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=32768, p=32768, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=32768, p=32768, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=32768, p=32768, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=65536, p=32768, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=65536, p=65536, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=65536, p=65536, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=65536, p=65536, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=65536, p=65536, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=131072, p=65536, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=131072, p=131072, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=131072, p=131072, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=131072, p=131072, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=131072, p=131072, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=262144, p=131072, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=262144, p=262144, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=262144, p=262144, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=262144, p=262144, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=262144, p=262144, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=524288, p=262144, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=524288, p=524288, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=524288, p=524288, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=524288, p=524288, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=524288, p=524288, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=1048576, p=524288, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=1048576, p=1048576, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=1048576, p=1048576, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=1048576, p=1048576, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=1048576, p=1048576, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=2097152, p=1048576, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=2097152, p=2097152, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=2097152, p=2097152, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=2097152, p=2097152, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=2097152, p=2097152, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=4194304, p=2097152, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=4194304, p=4194304, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=4194304, p=4194304, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=4194304, p=4194304, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=4194304, p=4194304, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=8388608, p=4194304, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=8388608, p=8388608, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=8388608, p=8388608, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=8388608, p=8388608, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=8388608, p=8388608, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=16777216, p=8388608, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=16777216, p=16777216, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=16777216, p=16777216, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=16777216, p=16777216, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=16777216, p=16777216, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=33554432, p=16777216, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=33554432, p=33554432, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=33554432, p=33554432, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=33554432, p=33554432, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=33554432, p=33554432, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=67108864, p=33554432, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=67108864, p=67108864, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=67108864, p=67108864, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=67108864, p=67108864, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=67108864, p=67108864, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=134217728, p=67108864, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=134217728, p=134217728, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=134217728, p=134217728, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=134217728, p=134217728, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=134217728, p=134217728, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=268435456, p=134217728, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=268435456, p=268435456, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=268435456, p=268435456, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=268435456, p=268435456, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=268435456, p=268435456, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=536870912, p=268435456, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=536870912, p=536870912, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=536870912, p=536870912, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=536870912, p=536870912, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=536870912, p=536870912, q=0, r=0] [L39] EXPR 2 * d [L39] d = 2 * d VAL [A=0, B=1, d=1073741824, p=536870912, q=0, r=0] [L40] EXPR 2 * p [L40] p = 2 * p VAL [A=0, B=1, d=1073741824, p=1073741824, q=0, r=0] [L33] COND TRUE 1 VAL [A=0, B=1, d=1073741824, p=1073741824, q=0, r=0] [L37] EXPR B * p VAL [A=0, B=1, d=1073741824, p=1073741824, q=0, r=0] [L37] COND FALSE !(!(d == B * p)) VAL [A=0, B=1, d=1073741824, p=1073741824, q=0, r=0] [L39] 2 * d VAL [A=0, B=1, d=1073741824, p=1073741824, q=0, r=0] - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 39]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 40]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 40]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 47]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 47]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 47]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 47]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 49]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 49]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 50]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 50]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 52]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 52]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 53]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 53]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 277.1s, OverallIterations: 28, TraceHistogramMax: 31, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.1s, AutomataDifference: 66.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1821 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1821 mSDsluCounter, 2215 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 355 IncrementalHoareTripleChecker+Unchecked, 1534 mSDsCounter, 199 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2085 IncrementalHoareTripleChecker+Invalid, 2639 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 199 mSolverCounterUnsat, 681 mSDtfsCounter, 2085 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1828 GetRequests, 1399 SyntacticMatches, 141 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6981 ImplicationChecksByTransitivity, 247.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=428occurred in iteration=24, InterpolantAutomatonStates: 221, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 27 MinimizatonAttempts, 1147 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 14.8s InterpolantComputationTime, 1030 NumberOfCodeBlocks, 1014 NumberOfCodeBlocksAsserted, 64 NumberOfCheckSat, 1274 ConstructedInterpolants, 62 QuantifiedInterpolants, 9831 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1482 ConjunctsInSsa, 191 ConjunctsInUnsatCore, 38 InterpolantComputations, 16 PerfectInterpolantSequences, 71/5189 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 3.0s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 98, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 261, TOOLS_POST_TIME: 2.2s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 261, TOOLS_QUANTIFIERELIM_TIME: 2.1s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 386, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 31, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 10, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 16, DOMAIN_ISSUBSETEQ_TIME: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 98, DOMAIN_ISBOTTOM_TIME: 0.2s, LOOP_SUMMARIZER_APPLICATIONS: 6, LOOP_SUMMARIZER_CACHE_MISSES: 6, LOOP_SUMMARIZER_OVERALL_TIME: 1.7s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.7s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 16, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.1s, DAG_COMPRESSION_PROCESSED_NODES: 2920, DAG_COMPRESSION_RETAINED_NODES: 282, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-20 19:52:11,424 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-20 19:52:11,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f42e-17b4-465b-b451-5eee69208ad3/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)