./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-easy2-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-easy2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta --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 64bit --witnessprinter.graph.data.programhash d7a26ac99d24cf78f342a00198534968a8c9a8e19670213e333d305f9460bd44 --- 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-dbf71c6-m [2022-10-17 17:36:33,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:36:33,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:36:33,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:36:33,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:36:33,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:36:33,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:36:33,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:36:33,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:36:33,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:36:33,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:36:33,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:36:33,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:36:33,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:36:33,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:36:33,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:36:33,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:36:33,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:36:33,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:36:33,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:36:33,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:36:33,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:36:33,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:36:33,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:36:33,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:36:33,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:36:33,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:36:33,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:36:33,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:36:33,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:36:33,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:36:33,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:36:33,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:36:33,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:36:33,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:36:33,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:36:33,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:36:33,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:36:33,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:36:33,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:36:33,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:36:33,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-10-17 17:36:33,669 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:36:33,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:36:33,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:36:33,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:36:33,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:36:33,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:36:33,671 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:36:33,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:36:33,672 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:36:33,672 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:36:33,673 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:36:33,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:36:33,673 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:36:33,673 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:36:33,673 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:36:33,674 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:36:33,674 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:36:33,674 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:36:33,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:36:33,675 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:36:33,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:36:33,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:36:33,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:36:33,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:36:33,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:36:33,677 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-17 17:36:33,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:36:33,677 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:36:33,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:36:33,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:36:33,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:36:33,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:36:33,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:36:33,679 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:36:33,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:36:33,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:36:33,680 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:36:33,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:36:33,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:36:33,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:36:33,681 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_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7a26ac99d24cf78f342a00198534968a8c9a8e19670213e333d305f9460bd44 [2022-10-17 17:36:33,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:36:33,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:36:33,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:36:33,980 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:36:33,981 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:36:33,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-easy2-1.c [2022-10-17 17:36:34,046 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/data/29cc09ee5/f2319b0a4a1d4894806818c09473e0d4/FLAG1531dbb6e [2022-10-17 17:36:34,521 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:36:34,521 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-easy2-1.c [2022-10-17 17:36:34,526 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/data/29cc09ee5/f2319b0a4a1d4894806818c09473e0d4/FLAG1531dbb6e [2022-10-17 17:36:35,024 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/data/29cc09ee5/f2319b0a4a1d4894806818c09473e0d4 [2022-10-17 17:36:35,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:36:35,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:36:35,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:36:35,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:36:35,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:36:35,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e507879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35, skipping insertion in model container [2022-10-17 17:36:35,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:36:35,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:36:35,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:36:35,262 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:36:35,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:36:35,286 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:36:35,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35 WrapperNode [2022-10-17 17:36:35,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:36:35,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:36:35,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:36:35,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:36:35,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,319 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-10-17 17:36:35,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:36:35,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:36:35,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:36:35,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:36:35,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,339 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:36:35,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:36:35,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:36:35,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:36:35,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (1/1) ... [2022-10-17 17:36:35,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:36:35,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:35,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:36:35,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:36:35,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:36:35,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:36:35,490 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:36:35,492 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:36:35,649 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:36:35,685 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:36:35,685 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:36:35,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:36:35 BoogieIcfgContainer [2022-10-17 17:36:35,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:36:35,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:36:35,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:36:35,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:36:35,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:36:35" (1/3) ... [2022-10-17 17:36:35,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccd7385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:36:35, skipping insertion in model container [2022-10-17 17:36:35,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:35" (2/3) ... [2022-10-17 17:36:35,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccd7385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:36:35, skipping insertion in model container [2022-10-17 17:36:35,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:36:35" (3/3) ... [2022-10-17 17:36:35,702 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-easy2-1.c [2022-10-17 17:36:35,726 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:36:35,726 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-10-17 17:36:35,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:36:35,797 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;@54ca79dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:36:35,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-17 17:36:35,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:35,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 17:36:35,809 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:35,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 17:36:35,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:36:35,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:35,818 INFO L85 PathProgramCache]: Analyzing trace with hash 60896, now seen corresponding path program 1 times [2022-10-17 17:36:35,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:35,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104665903] [2022-10-17 17:36:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:35,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:36,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:36,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104665903] [2022-10-17 17:36:36,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104665903] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:36:36,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:36:36,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 17:36:36,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77031227] [2022-10-17 17:36:36,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:36:36,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:36:36,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:36,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:36:36,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:36:36,100 INFO L87 Difference]: Start difference. First operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 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) [2022-10-17 17:36:36,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:36,169 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-10-17 17:36:36,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:36:36,172 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 [2022-10-17 17:36:36,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:36,180 INFO L225 Difference]: With dead ends: 20 [2022-10-17 17:36:36,194 INFO L226 Difference]: Without dead ends: 17 [2022-10-17 17:36:36,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:36:36,201 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:36,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 19 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:36:36,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-10-17 17:36:36,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-10-17 17:36:36,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.6) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:36,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-10-17 17:36:36,261 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2022-10-17 17:36:36,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:36,268 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-10-17 17:36:36,268 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) [2022-10-17 17:36:36,268 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-10-17 17:36:36,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-17 17:36:36,269 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:36,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-17 17:36:36,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:36:36,270 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:36:36,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1887821, now seen corresponding path program 1 times [2022-10-17 17:36:36,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:36,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354979483] [2022-10-17 17:36:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:36,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:36,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:36,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:36,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354979483] [2022-10-17 17:36:36,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354979483] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:36:36,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:36:36,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 17:36:36,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973044189] [2022-10-17 17:36:36,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:36:36,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:36:36,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:36,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:36:36,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:36:36,334 INFO L87 Difference]: Start difference. First operand 16 states and 16 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) [2022-10-17 17:36:36,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:36,358 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-10-17 17:36:36,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:36:36,359 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 [2022-10-17 17:36:36,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:36,359 INFO L225 Difference]: With dead ends: 16 [2022-10-17 17:36:36,360 INFO L226 Difference]: Without dead ends: 15 [2022-10-17 17:36:36,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:36:36,362 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:36,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 9 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:36:36,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-10-17 17:36:36,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-10-17 17:36:36,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:36,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-10-17 17:36:36,372 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 4 [2022-10-17 17:36:36,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:36,373 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-10-17 17:36:36,374 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) [2022-10-17 17:36:36,374 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-10-17 17:36:36,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 17:36:36,377 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:36,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 17:36:36,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:36:36,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:36:36,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:36,384 INFO L85 PathProgramCache]: Analyzing trace with hash 58522498, now seen corresponding path program 1 times [2022-10-17 17:36:36,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:36,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407863487] [2022-10-17 17:36:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:36,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:36,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:36,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407863487] [2022-10-17 17:36:36,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407863487] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:36:36,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:36:36,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 17:36:36,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277678459] [2022-10-17 17:36:36,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:36:36,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:36:36,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:36,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:36:36,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:36:36,448 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:36,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:36,457 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-10-17 17:36:36,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:36:36,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-17 17:36:36,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:36,459 INFO L225 Difference]: With dead ends: 15 [2022-10-17 17:36:36,459 INFO L226 Difference]: Without dead ends: 14 [2022-10-17 17:36:36,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:36:36,461 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:36,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 8 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:36:36,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-10-17 17:36:36,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-10-17 17:36:36,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:36,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-10-17 17:36:36,467 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2022-10-17 17:36:36,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:36,468 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-10-17 17:36:36,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:36,468 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-10-17 17:36:36,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:36:36,469 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:36,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:36:36,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:36:36,470 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:36:36,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:36,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1814197487, now seen corresponding path program 1 times [2022-10-17 17:36:36,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:36,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184146692] [2022-10-17 17:36:36,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:36,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:36,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:36,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184146692] [2022-10-17 17:36:36,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184146692] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:36:36,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:36:36,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 17:36:36,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743767194] [2022-10-17 17:36:36,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:36:36,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:36:36,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:36,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:36:36,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:36:36,512 INFO L87 Difference]: Start difference. First operand 14 states and 14 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) [2022-10-17 17:36:36,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:36,524 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-10-17 17:36:36,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:36:36,524 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 [2022-10-17 17:36:36,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:36,525 INFO L225 Difference]: With dead ends: 18 [2022-10-17 17:36:36,525 INFO L226 Difference]: Without dead ends: 17 [2022-10-17 17:36:36,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:36:36,528 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:36,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:36:36,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-10-17 17:36:36,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-10-17 17:36:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 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) [2022-10-17 17:36:36,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-10-17 17:36:36,533 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2022-10-17 17:36:36,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:36,534 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-10-17 17:36:36,534 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) [2022-10-17 17:36:36,534 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-10-17 17:36:36,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 17:36:36,535 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:36,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:36:36,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:36:36,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:36:36,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:36,536 INFO L85 PathProgramCache]: Analyzing trace with hash 405547300, now seen corresponding path program 1 times [2022-10-17 17:36:36,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:36,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363424361] [2022-10-17 17:36:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:36,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:36,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:36,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:36,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363424361] [2022-10-17 17:36:36,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363424361] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:36:36,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:36:36,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 17:36:36,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639210636] [2022-10-17 17:36:36,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:36:36,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:36:36,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:36,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:36:36,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:36:36,579 INFO L87 Difference]: Start difference. First operand 17 states and 17 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) [2022-10-17 17:36:36,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:36,598 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-10-17 17:36:36,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:36:36,600 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 [2022-10-17 17:36:36,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:36,600 INFO L225 Difference]: With dead ends: 17 [2022-10-17 17:36:36,600 INFO L226 Difference]: Without dead ends: 16 [2022-10-17 17:36:36,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:36:36,603 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:36,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:36:36,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-10-17 17:36:36,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-10-17 17:36:36,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:36,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-10-17 17:36:36,608 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2022-10-17 17:36:36,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:36,608 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-10-17 17:36:36,609 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) [2022-10-17 17:36:36,609 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-10-17 17:36:36,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:36:36,609 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:36,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:36:36,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 17:36:36,615 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:36:36,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:36,621 INFO L85 PathProgramCache]: Analyzing trace with hash -312935535, now seen corresponding path program 1 times [2022-10-17 17:36:36,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:36,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218090964] [2022-10-17 17:36:36,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:36,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:36,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:36,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:36,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218090964] [2022-10-17 17:36:36,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218090964] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:36:36,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:36:36,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:36:36,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240359505] [2022-10-17 17:36:36,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:36:36,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:36:36,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:36,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:36:36,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:36:36,688 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-10-17 17:36:36,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:36,707 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-10-17 17:36:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:36:36,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2022-10-17 17:36:36,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:36,712 INFO L225 Difference]: With dead ends: 16 [2022-10-17 17:36:36,712 INFO L226 Difference]: Without dead ends: 15 [2022-10-17 17:36:36,712 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 [2022-10-17 17:36:36,714 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:36,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:36:36,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-10-17 17:36:36,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-10-17 17:36:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:36,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-10-17 17:36:36,719 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-10-17 17:36:36,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:36,719 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-10-17 17:36:36,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-10-17 17:36:36,719 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-10-17 17:36:36,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 17:36:36,720 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:36,720 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:36:36,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 17:36:36,720 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:36:36,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:36,721 INFO L85 PathProgramCache]: Analyzing trace with hash -83337101, now seen corresponding path program 1 times [2022-10-17 17:36:36,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:36,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185326963] [2022-10-17 17:36:36,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:36,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:36,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:36,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:36,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185326963] [2022-10-17 17:36:36,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185326963] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:36:36,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760490471] [2022-10-17 17:36:36,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:36,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:36,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:36,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:36,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:36:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:36,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:36:36,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:36,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:36:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:36,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760490471] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:36:36,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1914639526] [2022-10-17 17:36:37,009 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:36:37,009 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:36:37,014 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:36:37,021 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:36:37,021 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:36:37,319 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:36:37,441 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '315#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-10-17 17:36:37,442 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:36:37,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:36:37,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-10-17 17:36:37,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698569234] [2022-10-17 17:36:37,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:36:37,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:36:37,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:37,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:36:37,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-10-17 17:36:37,447 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 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) [2022-10-17 17:36:37,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:37,504 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2022-10-17 17:36:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:36:37,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 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 10 [2022-10-17 17:36:37,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:37,506 INFO L225 Difference]: With dead ends: 36 [2022-10-17 17:36:37,506 INFO L226 Difference]: Without dead ends: 35 [2022-10-17 17:36:37,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-10-17 17:36:37,508 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:37,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 31 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:36:37,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-10-17 17:36:37,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-10-17 17:36:37,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:37,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-10-17 17:36:37,515 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 10 [2022-10-17 17:36:37,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:37,515 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-10-17 17:36:37,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 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) [2022-10-17 17:36:37,515 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-10-17 17:36:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:36:37,516 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:37,516 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-17 17:36:37,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:36:37,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-10-17 17:36:37,725 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:36:37,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:37,726 INFO L85 PathProgramCache]: Analyzing trace with hash -204434052, now seen corresponding path program 1 times [2022-10-17 17:36:37,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:37,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834405683] [2022-10-17 17:36:37,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:37,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:37,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:37,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:37,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834405683] [2022-10-17 17:36:37,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834405683] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:36:37,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788622097] [2022-10-17 17:36:37,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:37,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:37,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:37,826 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:37,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:36:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:37,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:36:37,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:37,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:37,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:36:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:37,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788622097] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:36:37,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1209049109] [2022-10-17 17:36:37,965 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:36:37,966 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:36:37,966 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:36:37,966 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:36:37,967 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:36:38,087 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:36:38,190 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '478#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-10-17 17:36:38,190 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:36:38,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:36:38,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-10-17 17:36:38,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485162017] [2022-10-17 17:36:38,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:36:38,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:36:38,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:38,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:36:38,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-10-17 17:36:38,193 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2022-10-17 17:36:38,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:38,231 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-10-17 17:36:38,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:36:38,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 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 13 [2022-10-17 17:36:38,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:38,235 INFO L225 Difference]: With dead ends: 37 [2022-10-17 17:36:38,235 INFO L226 Difference]: Without dead ends: 36 [2022-10-17 17:36:38,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-10-17 17:36:38,242 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:38,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:36:38,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-10-17 17:36:38,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-10-17 17:36:38,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2022-10-17 17:36:38,252 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 13 [2022-10-17 17:36:38,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:38,253 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2022-10-17 17:36:38,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2022-10-17 17:36:38,253 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2022-10-17 17:36:38,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-17 17:36:38,254 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:38,254 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1] [2022-10-17 17:36:38,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:36:38,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:38,455 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:36:38,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:38,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2101518560, now seen corresponding path program 2 times [2022-10-17 17:36:38,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:38,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928915778] [2022-10-17 17:36:38,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:38,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:38,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:38,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928915778] [2022-10-17 17:36:38,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928915778] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:36:38,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871336704] [2022-10-17 17:36:38,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:36:38,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:38,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:38,614 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:38,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 17:36:38,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-10-17 17:36:38,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:36:38,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 17:36:38,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:38,707 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:38,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:36:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:38,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871336704] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:36:38,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [314948287] [2022-10-17 17:36:38,828 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:36:38,828 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:36:38,828 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:36:38,829 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:36:38,829 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:36:38,899 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:36:38,992 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '759#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-10-17 17:36:38,992 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:36:38,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:36:38,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-17 17:36:38,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901624066] [2022-10-17 17:36:38,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:36:38,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 17:36:38,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:38,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 17:36:38,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-10-17 17:36:38,994 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:39,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:39,044 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2022-10-17 17:36:39,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 17:36:39,045 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-10-17 17:36:39,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:39,046 INFO L225 Difference]: With dead ends: 81 [2022-10-17 17:36:39,046 INFO L226 Difference]: Without dead ends: 80 [2022-10-17 17:36:39,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-10-17 17:36:39,048 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 44 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:39,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 65 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:36:39,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-10-17 17:36:39,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2022-10-17 17:36:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.095890410958904) internal successors, (80), 74 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2022-10-17 17:36:39,058 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 31 [2022-10-17 17:36:39,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:39,058 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2022-10-17 17:36:39,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:39,058 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2022-10-17 17:36:39,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-17 17:36:39,059 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:39,060 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 1, 1] [2022-10-17 17:36:39,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:36:39,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:39,282 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:36:39,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:39,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1398897583, now seen corresponding path program 2 times [2022-10-17 17:36:39,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:39,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289763630] [2022-10-17 17:36:39,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:39,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:39,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:39,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289763630] [2022-10-17 17:36:39,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289763630] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:36:39,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397504227] [2022-10-17 17:36:39,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:36:39,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:39,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:39,474 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:39,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 17:36:39,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-10-17 17:36:39,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:36:39,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 17:36:39,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:39,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:36:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:39,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397504227] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:36:39,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1446850961] [2022-10-17 17:36:39,695 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:36:39,695 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:36:39,695 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:36:39,695 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:36:39,696 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:36:39,789 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:36:39,879 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1153#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-10-17 17:36:39,879 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:36:39,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:36:39,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-17 17:36:39,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639645101] [2022-10-17 17:36:39,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:36:39,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 17:36:39,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:39,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 17:36:39,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-10-17 17:36:39,883 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:39,937 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2022-10-17 17:36:39,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 17:36:39,938 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 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 34 [2022-10-17 17:36:39,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:39,943 INFO L225 Difference]: With dead ends: 79 [2022-10-17 17:36:39,943 INFO L226 Difference]: Without dead ends: 78 [2022-10-17 17:36:39,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-10-17 17:36:39,945 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:39,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 60 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:36:39,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-10-17 17:36:39,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-10-17 17:36:39,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:39,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2022-10-17 17:36:39,969 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 34 [2022-10-17 17:36:39,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:39,970 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2022-10-17 17:36:39,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:39,970 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2022-10-17 17:36:39,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-17 17:36:39,974 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:39,974 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1] [2022-10-17 17:36:40,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 17:36:40,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-17 17:36:40,193 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:36:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:40,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1428056832, now seen corresponding path program 3 times [2022-10-17 17:36:40,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:40,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175726146] [2022-10-17 17:36:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:40,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:40,540 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:40,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:40,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175726146] [2022-10-17 17:36:40,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175726146] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:36:40,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831459062] [2022-10-17 17:36:40,540 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 17:36:40,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:40,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:40,542 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:40,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 17:36:40,597 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 17:36:40,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:36:40,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 17:36:40,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:40,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:36:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:40,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831459062] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:36:40,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [964242690] [2022-10-17 17:36:40,987 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:36:40,987 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:36:40,988 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:36:40,988 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:36:40,988 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:36:41,059 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:36:41,159 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1794#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-10-17 17:36:41,160 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:36:41,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:36:41,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-10-17 17:36:41,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203175240] [2022-10-17 17:36:41,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:36:41,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-17 17:36:41,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:41,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-17 17:36:41,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=571, Unknown=0, NotChecked=0, Total=870 [2022-10-17 17:36:41,167 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand has 24 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 23 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:41,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:41,282 INFO L93 Difference]: Finished difference Result 171 states and 182 transitions. [2022-10-17 17:36:41,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-17 17:36:41,283 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 23 states have internal predecessors, (146), 0 states have call successors, (0), 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 73 [2022-10-17 17:36:41,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:41,287 INFO L225 Difference]: With dead ends: 171 [2022-10-17 17:36:41,287 INFO L226 Difference]: Without dead ends: 170 [2022-10-17 17:36:41,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=299, Invalid=571, Unknown=0, NotChecked=0, Total=870 [2022-10-17 17:36:41,289 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 102 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:41,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 133 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:36:41,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-10-17 17:36:41,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 159. [2022-10-17 17:36:41,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 157 states have (on average 1.0828025477707006) internal successors, (170), 158 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:41,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 170 transitions. [2022-10-17 17:36:41,316 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 170 transitions. Word has length 73 [2022-10-17 17:36:41,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:41,316 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 170 transitions. [2022-10-17 17:36:41,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 23 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:41,317 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 170 transitions. [2022-10-17 17:36:41,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-17 17:36:41,318 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:41,318 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 1, 1] [2022-10-17 17:36:41,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 17:36:41,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-17 17:36:41,547 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:36:41,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:41,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1589970481, now seen corresponding path program 3 times [2022-10-17 17:36:41,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:41,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070900615] [2022-10-17 17:36:41,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:41,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:41,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:41,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070900615] [2022-10-17 17:36:41,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070900615] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:36:41,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796404469] [2022-10-17 17:36:41,753 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 17:36:41,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:41,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:41,754 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:41,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 17:36:41,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 17:36:41,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:36:41,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 17:36:41,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:41,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:36:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:42,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796404469] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:36:42,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [380097781] [2022-10-17 17:36:42,214 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:36:42,214 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:36:42,215 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:36:42,215 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:36:42,215 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:36:42,279 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:36:42,380 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2650#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-10-17 17:36:42,380 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:36:42,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:36:42,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-10-17 17:36:42,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631649938] [2022-10-17 17:36:42,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:36:42,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-17 17:36:42,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:42,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-17 17:36:42,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=571, Unknown=0, NotChecked=0, Total=870 [2022-10-17 17:36:42,383 INFO L87 Difference]: Start difference. First operand 159 states and 170 transitions. Second operand has 24 states, 23 states have (on average 6.608695652173913) internal successors, (152), 23 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:42,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:42,463 INFO L93 Difference]: Finished difference Result 163 states and 174 transitions. [2022-10-17 17:36:42,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-17 17:36:42,464 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.608695652173913) internal successors, (152), 23 states have internal predecessors, (152), 0 states have call successors, (0), 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 76 [2022-10-17 17:36:42,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:42,466 INFO L225 Difference]: With dead ends: 163 [2022-10-17 17:36:42,466 INFO L226 Difference]: Without dead ends: 162 [2022-10-17 17:36:42,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=299, Invalid=571, Unknown=0, NotChecked=0, Total=870 [2022-10-17 17:36:42,468 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:42,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 122 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:36:42,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-10-17 17:36:42,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-10-17 17:36:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 160 states have (on average 1.0125) internal successors, (162), 161 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:42,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2022-10-17 17:36:42,485 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 76 [2022-10-17 17:36:42,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:42,488 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2022-10-17 17:36:42,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.608695652173913) internal successors, (152), 23 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:42,488 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2022-10-17 17:36:42,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-10-17 17:36:42,495 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:42,495 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 1, 1] [2022-10-17 17:36:42,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-17 17:36:42,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-17 17:36:42,715 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:36:42,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:42,716 INFO L85 PathProgramCache]: Analyzing trace with hash -85722944, now seen corresponding path program 4 times [2022-10-17 17:36:42,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:42,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212651376] [2022-10-17 17:36:42,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:42,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:43,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:43,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:43,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212651376] [2022-10-17 17:36:43,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212651376] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:36:43,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531362380] [2022-10-17 17:36:43,482 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-17 17:36:43,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:43,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:43,483 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:43,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 17:36:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:43,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-17 17:36:43,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:43,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:36:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:44,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531362380] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:36:44,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1296883529] [2022-10-17 17:36:44,784 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:36:44,785 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:36:44,785 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:36:44,785 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:36:44,786 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:36:44,835 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:36:44,978 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4011#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-10-17 17:36:44,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:36:44,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:36:44,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-10-17 17:36:44,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92061700] [2022-10-17 17:36:44,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:36:44,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-17 17:36:44,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:44,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-17 17:36:44,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1151, Invalid=1711, Unknown=0, NotChecked=0, Total=2862 [2022-10-17 17:36:44,984 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand has 48 states, 47 states have (on average 6.680851063829787) internal successors, (314), 47 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:45,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:45,174 INFO L93 Difference]: Finished difference Result 351 states and 374 transitions. [2022-10-17 17:36:45,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-10-17 17:36:45,175 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.680851063829787) internal successors, (314), 47 states have internal predecessors, (314), 0 states have call successors, (0), 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 157 [2022-10-17 17:36:45,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:45,177 INFO L225 Difference]: With dead ends: 351 [2022-10-17 17:36:45,177 INFO L226 Difference]: Without dead ends: 350 [2022-10-17 17:36:45,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1151, Invalid=1711, Unknown=0, NotChecked=0, Total=2862 [2022-10-17 17:36:45,180 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 185 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:45,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 261 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:36:45,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-10-17 17:36:45,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 327. [2022-10-17 17:36:45,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 325 states have (on average 1.0769230769230769) internal successors, (350), 326 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:45,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 350 transitions. [2022-10-17 17:36:45,194 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 350 transitions. Word has length 157 [2022-10-17 17:36:45,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:45,194 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 350 transitions. [2022-10-17 17:36:45,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.680851063829787) internal successors, (314), 47 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:45,195 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 350 transitions. [2022-10-17 17:36:45,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-10-17 17:36:45,197 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:45,197 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 1, 1] [2022-10-17 17:36:45,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 17:36:45,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-17 17:36:45,414 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:36:45,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:45,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1733361167, now seen corresponding path program 4 times [2022-10-17 17:36:45,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:45,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693862365] [2022-10-17 17:36:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:45,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:46,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 0 proven. 1727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:46,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:46,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693862365] [2022-10-17 17:36:46,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693862365] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:36:46,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363570881] [2022-10-17 17:36:46,163 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-17 17:36:46,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:46,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:46,166 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:46,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 17:36:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:46,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-17 17:36:46,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 0 proven. 1727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:46,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:36:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 0 proven. 1727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:47,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363570881] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:36:47,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [446783229] [2022-10-17 17:36:47,503 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:36:47,504 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:36:47,504 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:36:47,504 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:36:47,504 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:36:47,551 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:36:47,706 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5791#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-10-17 17:36:47,707 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:36:47,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:36:47,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-10-17 17:36:47,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835593328] [2022-10-17 17:36:47,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:36:47,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-17 17:36:47,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:47,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-17 17:36:47,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1151, Invalid=1711, Unknown=0, NotChecked=0, Total=2862 [2022-10-17 17:36:47,712 INFO L87 Difference]: Start difference. First operand 327 states and 350 transitions. Second operand has 48 states, 47 states have (on average 6.808510638297872) internal successors, (320), 47 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:47,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:47,879 INFO L93 Difference]: Finished difference Result 331 states and 354 transitions. [2022-10-17 17:36:47,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-10-17 17:36:47,880 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.808510638297872) internal successors, (320), 47 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-10-17 17:36:47,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:47,885 INFO L225 Difference]: With dead ends: 331 [2022-10-17 17:36:47,885 INFO L226 Difference]: Without dead ends: 330 [2022-10-17 17:36:47,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1151, Invalid=1711, Unknown=0, NotChecked=0, Total=2862 [2022-10-17 17:36:47,888 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 46 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:47,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 245 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:36:47,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-10-17 17:36:47,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2022-10-17 17:36:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 328 states have (on average 1.0060975609756098) internal successors, (330), 329 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 330 transitions. [2022-10-17 17:36:47,905 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 330 transitions. Word has length 160 [2022-10-17 17:36:47,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:47,906 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 330 transitions. [2022-10-17 17:36:47,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.808510638297872) internal successors, (320), 47 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:47,907 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 330 transitions. [2022-10-17 17:36:47,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-10-17 17:36:47,914 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:47,915 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 1, 1] [2022-10-17 17:36:47,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-17 17:36:48,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-17 17:36:48,123 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:36:48,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:48,123 INFO L85 PathProgramCache]: Analyzing trace with hash -967270336, now seen corresponding path program 5 times [2022-10-17 17:36:48,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:48,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858387611] [2022-10-17 17:36:48,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:48,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:50,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7337 backedges. 0 proven. 7337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:50,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:50,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858387611] [2022-10-17 17:36:50,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858387611] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:36:50,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10267668] [2022-10-17 17:36:50,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:36:50,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:50,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:50,782 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:50,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 17:36:50,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-10-17 17:36:50,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:36:50,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 48 conjunts are in the unsatisfiable core [2022-10-17 17:36:50,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:51,373 INFO L134 CoverageAnalysis]: Checked inductivity of 7337 backedges. 0 proven. 7337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:51,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:36:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 7337 backedges. 0 proven. 7337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:54,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10267668] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:36:54,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1176827945] [2022-10-17 17:36:54,411 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:36:54,411 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:36:54,411 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:36:54,412 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:36:54,412 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:36:54,475 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:36:54,682 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8592#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-10-17 17:36:54,682 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:36:54,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:36:54,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-10-17 17:36:54,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416999559] [2022-10-17 17:36:54,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:36:54,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-10-17 17:36:54,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:54,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-10-17 17:36:54,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4583, Invalid=5719, Unknown=0, NotChecked=0, Total=10302 [2022-10-17 17:36:54,691 INFO L87 Difference]: Start difference. First operand 330 states and 330 transitions. Second operand has 96 states, 95 states have (on average 6.842105263157895) internal successors, (650), 95 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:55,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:55,229 INFO L93 Difference]: Finished difference Result 711 states and 758 transitions. [2022-10-17 17:36:55,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-10-17 17:36:55,230 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.842105263157895) internal successors, (650), 95 states have internal predecessors, (650), 0 states have call successors, (0), 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 325 [2022-10-17 17:36:55,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:55,234 INFO L225 Difference]: With dead ends: 711 [2022-10-17 17:36:55,234 INFO L226 Difference]: Without dead ends: 710 [2022-10-17 17:36:55,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1020 GetRequests, 920 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4583, Invalid=5719, Unknown=0, NotChecked=0, Total=10302 [2022-10-17 17:36:55,239 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 498 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:55,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 527 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:36:55,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-10-17 17:36:55,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 663. [2022-10-17 17:36:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 661 states have (on average 1.0741301059001513) internal successors, (710), 662 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 710 transitions. [2022-10-17 17:36:55,263 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 710 transitions. Word has length 325 [2022-10-17 17:36:55,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:55,264 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 710 transitions. [2022-10-17 17:36:55,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.842105263157895) internal successors, (650), 95 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:36:55,265 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 710 transitions. [2022-10-17 17:36:55,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-10-17 17:36:55,270 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:55,270 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 1, 1] [2022-10-17 17:36:55,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-17 17:36:55,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:55,498 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:36:55,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:55,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1014946161, now seen corresponding path program 5 times [2022-10-17 17:36:55,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:55,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980678038] [2022-10-17 17:36:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:55,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 7475 backedges. 0 proven. 7475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:57,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:57,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980678038] [2022-10-17 17:36:57,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980678038] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:36:57,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440714373] [2022-10-17 17:36:57,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:36:57,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:57,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:57,822 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:57,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-17 17:36:58,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-10-17 17:36:58,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:36:58,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 48 conjunts are in the unsatisfiable core [2022-10-17 17:36:58,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7475 backedges. 0 proven. 7475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:58,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:37:01,385 INFO L134 CoverageAnalysis]: Checked inductivity of 7475 backedges. 0 proven. 7475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:37:01,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440714373] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:37:01,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [987637114] [2022-10-17 17:37:01,388 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:37:01,388 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:37:01,388 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:37:01,389 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:37:01,389 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:37:01,447 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:37:01,634 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12220#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-10-17 17:37:01,635 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:37:01,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:37:01,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-10-17 17:37:01,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616753068] [2022-10-17 17:37:01,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:37:01,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-10-17 17:37:01,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:37:01,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-10-17 17:37:01,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4583, Invalid=5719, Unknown=0, NotChecked=0, Total=10302 [2022-10-17 17:37:01,643 INFO L87 Difference]: Start difference. First operand 663 states and 710 transitions. Second operand has 96 states, 95 states have (on average 6.905263157894737) internal successors, (656), 95 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:37:02,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:02,083 INFO L93 Difference]: Finished difference Result 667 states and 714 transitions. [2022-10-17 17:37:02,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-10-17 17:37:02,084 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.905263157894737) internal successors, (656), 95 states have internal predecessors, (656), 0 states have call successors, (0), 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 328 [2022-10-17 17:37:02,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:02,088 INFO L225 Difference]: With dead ends: 667 [2022-10-17 17:37:02,088 INFO L226 Difference]: Without dead ends: 666 [2022-10-17 17:37:02,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 929 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4583, Invalid=5719, Unknown=0, NotChecked=0, Total=10302 [2022-10-17 17:37:02,094 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 94 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:02,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 482 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:37:02,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-10-17 17:37:02,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2022-10-17 17:37:02,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 664 states have (on average 1.0030120481927711) internal successors, (666), 665 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:37:02,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 666 transitions. [2022-10-17 17:37:02,119 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 666 transitions. Word has length 328 [2022-10-17 17:37:02,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:02,120 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 666 transitions. [2022-10-17 17:37:02,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.905263157894737) internal successors, (656), 95 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:37:02,121 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 666 transitions. [2022-10-17 17:37:02,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2022-10-17 17:37:02,143 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:02,143 INFO L195 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 1, 1] [2022-10-17 17:37:02,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-17 17:37:02,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a095584-b702-4773-834c-fdb435339462/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-17 17:37:02,344 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:37:02,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:02,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1019121856, now seen corresponding path program 6 times [2022-10-17 17:37:02,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:02,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647780310] [2022-10-17 17:37:02,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:02,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat