./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 366d45071e2a444aa552f231e24508af3eb704e415c6b738128a0398e54b53a7 --- 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-4e7fbc6 [2022-11-23 14:21:25,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:21:25,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:21:25,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:21:25,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:21:25,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:21:25,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:21:25,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:21:25,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:21:25,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:21:25,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:21:25,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:21:25,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:21:25,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:21:25,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:21:25,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:21:25,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:21:25,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:21:25,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:21:25,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:21:25,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:21:25,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:21:25,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:21:25,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:21:25,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:21:25,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:21:25,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:21:25,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:21:25,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:21:25,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:21:25,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:21:25,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:21:25,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:21:25,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:21:25,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:21:25,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:21:25,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:21:25,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:21:25,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:21:25,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:21:25,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:21:25,632 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 14:21:25,670 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:21:25,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:21:25,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:21:25,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:21:25,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:21:25,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:21:25,676 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:21:25,676 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:21:25,676 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:21:25,677 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:21:25,678 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:21:25,678 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:21:25,679 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:21:25,679 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:21:25,679 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:21:25,680 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:21:25,680 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:21:25,680 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:21:25,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:21:25,682 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:21:25,682 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:21:25,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:21:25,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:21:25,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:21:25,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:21:25,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:21:25,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:21:25,684 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 14:21:25,684 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:21:25,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:21:25,685 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:21:25,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:21:25,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:21:25,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:21:25,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:21:25,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:21:25,686 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:21:25,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:21:25,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:21:25,687 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:21:25,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:21:25,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:21:25,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:21:25,689 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_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 366d45071e2a444aa552f231e24508af3eb704e415c6b738128a0398e54b53a7 [2022-11-23 14:21:26,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:21:26,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:21:26,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:21:26,043 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:21:26,044 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:21:26,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i [2022-11-23 14:21:29,176 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:21:29,373 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:21:29,373 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i [2022-11-23 14:21:29,380 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/data/29165090e/83fc0718110d432c866b02c95ffed947/FLAG586ef16e1 [2022-11-23 14:21:29,398 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/data/29165090e/83fc0718110d432c866b02c95ffed947 [2022-11-23 14:21:29,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:21:29,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:21:29,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:21:29,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:21:29,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:21:29,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:29" (1/1) ... [2022-11-23 14:21:29,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c1d48ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:29, skipping insertion in model container [2022-11-23 14:21:29,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:29" (1/1) ... [2022-11-23 14:21:29,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:21:29,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:21:29,621 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i[873,886] [2022-11-23 14:21:29,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:21:29,651 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:21:29,664 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i[873,886] [2022-11-23 14:21:29,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:21:29,689 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:21:29,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:29 WrapperNode [2022-11-23 14:21:29,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:21:29,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:21:29,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:21:29,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:21:29,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:29" (1/1) ... [2022-11-23 14:21:29,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:29" (1/1) ... [2022-11-23 14:21:29,728 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2022-11-23 14:21:29,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:21:29,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:21:29,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:21:29,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:21:29,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:29" (1/1) ... [2022-11-23 14:21:29,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:29" (1/1) ... [2022-11-23 14:21:29,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:29" (1/1) ... [2022-11-23 14:21:29,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:29" (1/1) ... [2022-11-23 14:21:29,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:29" (1/1) ... [2022-11-23 14:21:29,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:29" (1/1) ... [2022-11-23 14:21:29,759 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:29" (1/1) ... [2022-11-23 14:21:29,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:29" (1/1) ... [2022-11-23 14:21:29,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:21:29,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:21:29,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:21:29,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:21:29,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:29" (1/1) ... [2022-11-23 14:21:29,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:21:29,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:29,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:21:29,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:21:29,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:21:29,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:21:29,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:21:29,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:21:29,911 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:21:29,914 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:21:30,036 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:21:30,060 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:21:30,060 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:21:30,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:30 BoogieIcfgContainer [2022-11-23 14:21:30,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:21:30,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:21:30,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:21:30,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:21:30,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:21:29" (1/3) ... [2022-11-23 14:21:30,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58eaa87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:30, skipping insertion in model container [2022-11-23 14:21:30,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:29" (2/3) ... [2022-11-23 14:21:30,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58eaa87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:30, skipping insertion in model container [2022-11-23 14:21:30,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:30" (3/3) ... [2022-11-23 14:21:30,073 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark38_conjunctive.i [2022-11-23 14:21:30,093 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:21:30,094 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-23 14:21:30,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:21:30,150 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;@5aa92c84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:21:30,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-23 14:21:30,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 10 states have (on average 1.8) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:30,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 14:21:30,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:30,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 14:21:30,162 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)] === [2022-11-23 14:21:30,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:30,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2181983, now seen corresponding path program 1 times [2022-11-23 14:21:30,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:30,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111085060] [2022-11-23 14:21:30,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:30,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:30,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:30,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111085060] [2022-11-23 14:21:30,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111085060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:30,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:30,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:21:30,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305293914] [2022-11-23 14:21:30,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:30,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:21:30,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:30,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:21:30,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:21:30,581 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.8) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:30,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:30,653 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-11-23 14:21:30,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:21:30,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-23 14:21:30,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:30,665 INFO L225 Difference]: With dead ends: 17 [2022-11-23 14:21:30,678 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 14:21:30,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:21:30,686 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 8 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 [2022-11-23 14:21:30,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 8 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:21:30,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 14:21:30,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-23 14:21:30,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.5555555555555556) 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) [2022-11-23 14:21:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-11-23 14:21:30,765 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2022-11-23 14:21:30,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:30,766 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-11-23 14:21:30,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:30,766 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-11-23 14:21:30,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 14:21:30,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:30,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 14:21:30,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:21:30,768 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:21:30,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:30,769 INFO L85 PathProgramCache]: Analyzing trace with hash 2182862, now seen corresponding path program 1 times [2022-11-23 14:21:30,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:30,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488376135] [2022-11-23 14:21:30,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:30,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:30,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:30,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488376135] [2022-11-23 14:21:30,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488376135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:30,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:30,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:21:30,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071926674] [2022-11-23 14:21:30,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:30,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:21:30,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:30,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:21:30,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:21:30,851 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:30,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:30,897 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-11-23 14:21:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:21:30,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-23 14:21:30,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:30,899 INFO L225 Difference]: With dead ends: 25 [2022-11-23 14:21:30,899 INFO L226 Difference]: Without dead ends: 24 [2022-11-23 14:21:30,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:21:30,902 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:30,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:21:30,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-23 14:21:30,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2022-11-23 14:21:30,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:30,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-23 14:21:30,909 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 4 [2022-11-23 14:21:30,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:30,909 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-23 14:21:30,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:30,910 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-23 14:21:30,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 14:21:30,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:30,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 14:21:30,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:21:30,911 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:21:30,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:30,912 INFO L85 PathProgramCache]: Analyzing trace with hash 67641523, now seen corresponding path program 1 times [2022-11-23 14:21:30,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:30,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560944168] [2022-11-23 14:21:30,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:30,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:30,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:30,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560944168] [2022-11-23 14:21:30,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560944168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:30,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:30,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:21:30,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888338128] [2022-11-23 14:21:30,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:30,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:21:30,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:30,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:21:30,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:21:30,961 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:30,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:30,977 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-11-23 14:21:30,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:21:30,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 14:21:30,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:30,979 INFO L225 Difference]: With dead ends: 21 [2022-11-23 14:21:30,979 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 14:21:30,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:21:30,981 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:30,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:21:30,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 14:21:30,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-23 14:21:30,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:30,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-23 14:21:30,987 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2022-11-23 14:21:30,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:30,991 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-23 14:21:30,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:30,991 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-23 14:21:30,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 14:21:30,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:30,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 14:21:30,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:21:30,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:21:30,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:30,994 INFO L85 PathProgramCache]: Analyzing trace with hash 67668783, now seen corresponding path program 1 times [2022-11-23 14:21:30,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:30,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693601204] [2022-11-23 14:21:30,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:30,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:31,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:31,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693601204] [2022-11-23 14:21:31,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693601204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:31,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:31,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:21:31,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936564392] [2022-11-23 14:21:31,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:31,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:21:31,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:31,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:21:31,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:21:31,038 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:31,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:31,060 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-11-23 14:21:31,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:21:31,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 14:21:31,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:31,061 INFO L225 Difference]: With dead ends: 24 [2022-11-23 14:21:31,062 INFO L226 Difference]: Without dead ends: 21 [2022-11-23 14:21:31,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:21:31,063 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:31,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 16 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:21:31,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-23 14:21:31,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2022-11-23 14:21:31,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.4166666666666667) 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) [2022-11-23 14:21:31,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-11-23 14:21:31,068 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 5 [2022-11-23 14:21:31,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:31,069 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-11-23 14:21:31,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:31,069 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-11-23 14:21:31,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:21:31,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:31,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 14:21:31,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:21:31,071 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:21:31,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:31,072 INFO L85 PathProgramCache]: Analyzing trace with hash 2096887265, now seen corresponding path program 1 times [2022-11-23 14:21:31,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:31,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100314347] [2022-11-23 14:21:31,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:31,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:31,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:31,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:31,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100314347] [2022-11-23 14:21:31,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100314347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:31,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:31,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:21:31,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660370900] [2022-11-23 14:21:31,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:31,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:21:31,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:31,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:21:31,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:21:31,138 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:31,188 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-11-23 14:21:31,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:21:31,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 14:21:31,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:31,190 INFO L225 Difference]: With dead ends: 17 [2022-11-23 14:21:31,190 INFO L226 Difference]: Without dead ends: 15 [2022-11-23 14:21:31,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:21:31,192 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:31,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 8 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:21:31,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-23 14:21:31,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-23 14:21:31,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) 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) [2022-11-23 14:21:31,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-23 14:21:31,197 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 6 [2022-11-23 14:21:31,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:31,198 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-23 14:21:31,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:31,199 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-23 14:21:31,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 14:21:31,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:31,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:21:31,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:21:31,200 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:21:31,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:31,201 INFO L85 PathProgramCache]: Analyzing trace with hash 578995829, now seen corresponding path program 1 times [2022-11-23 14:21:31,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:31,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703240216] [2022-11-23 14:21:31,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:31,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:31,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:31,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703240216] [2022-11-23 14:21:31,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703240216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:31,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:31,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:21:31,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102281028] [2022-11-23 14:21:31,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:31,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:21:31,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:31,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:21:31,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:21:31,281 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:31,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:31,326 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-11-23 14:21:31,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:21:31,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 14:21:31,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:31,340 INFO L225 Difference]: With dead ends: 18 [2022-11-23 14:21:31,340 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 14:21:31,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:21:31,342 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:31,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:21:31,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 14:21:31,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-23 14:21:31,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2142857142857142) 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) [2022-11-23 14:21:31,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-11-23 14:21:31,350 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2022-11-23 14:21:31,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:31,350 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-11-23 14:21:31,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:31,351 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-11-23 14:21:31,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 14:21:31,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:31,352 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 14:21:31,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:21:31,352 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:21:31,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash 276126747, now seen corresponding path program 1 times [2022-11-23 14:21:31,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:31,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992854288] [2022-11-23 14:21:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:31,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:31,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:31,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992854288] [2022-11-23 14:21:31,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992854288] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:21:31,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735014758] [2022-11-23 14:21:31,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:31,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:31,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:31,479 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:21:31,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:21:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:31,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:21:31,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:21:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:31,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:21:31,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:31,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735014758] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:21:31,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [512310563] [2022-11-23 14:21:31,661 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:21:31,661 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:21:31,665 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:21:31,671 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:21:31,671 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:21:32,071 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:21:32,354 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '346#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:21:32,354 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:21:32,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:21:32,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-23 14:21:32,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466659541] [2022-11-23 14:21:32,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:21:32,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:21:32,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:32,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:21:32,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:21:32,357 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:32,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:32,393 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2022-11-23 14:21:32,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:21:32,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-23 14:21:32,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:32,394 INFO L225 Difference]: With dead ends: 42 [2022-11-23 14:21:32,395 INFO L226 Difference]: Without dead ends: 41 [2022-11-23 14:21:32,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:21:32,396 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:32,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 31 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:21:32,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-23 14:21:32,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2022-11-23 14:21:32,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:32,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2022-11-23 14:21:32,402 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 10 [2022-11-23 14:21:32,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:32,402 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2022-11-23 14:21:32,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:32,403 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-11-23 14:21:32,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 14:21:32,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:32,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:21:32,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 14:21:32,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 14:21:32,609 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:21:32,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:32,610 INFO L85 PathProgramCache]: Analyzing trace with hash 276154007, now seen corresponding path program 1 times [2022-11-23 14:21:32,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:32,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052399949] [2022-11-23 14:21:32,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:32,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:32,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:32,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052399949] [2022-11-23 14:21:32,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052399949] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:21:32,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835998563] [2022-11-23 14:21:32,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:32,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:32,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:32,706 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:21:32,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:21:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:32,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:21:32,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:21:32,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:32,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:21:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:32,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835998563] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:21:32,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [181988668] [2022-11-23 14:21:32,833 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 14:21:32,833 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:21:32,833 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:21:32,834 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:21:32,834 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:21:33,070 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:21:33,422 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '495#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-11-23 14:21:33,422 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:21:33,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:21:33,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-23 14:21:33,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736555246] [2022-11-23 14:21:33,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:21:33,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:21:33,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:33,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:21:33,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:21:33,424 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:33,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:33,499 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-11-23 14:21:33,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:21:33,500 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-23 14:21:33,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:33,501 INFO L225 Difference]: With dead ends: 37 [2022-11-23 14:21:33,501 INFO L226 Difference]: Without dead ends: 31 [2022-11-23 14:21:33,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:21:33,502 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:33,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 35 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:21:33,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-23 14:21:33,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-11-23 14:21:33,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:33,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-11-23 14:21:33,508 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 10 [2022-11-23 14:21:33,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:33,508 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-11-23 14:21:33,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:33,509 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-11-23 14:21:33,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 14:21:33,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:33,509 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1] [2022-11-23 14:21:33,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:21:33,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:33,715 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:21:33,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:33,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1884514165, now seen corresponding path program 1 times [2022-11-23 14:21:33,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:33,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32936184] [2022-11-23 14:21:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:33,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:33,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:33,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32936184] [2022-11-23 14:21:33,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32936184] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:21:33,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30612370] [2022-11-23 14:21:33,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:33,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:33,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:33,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:21:33,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:21:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:33,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:21:33,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:21:33,927 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:33,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:21:34,012 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:34,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30612370] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:21:34,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1187088084] [2022-11-23 14:21:34,015 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:21:34,015 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:21:34,015 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:21:34,016 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:21:34,016 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:21:34,174 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:21:34,439 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '691#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-11-23 14:21:34,439 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:21:34,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:21:34,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-23 14:21:34,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744315817] [2022-11-23 14:21:34,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:21:34,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 14:21:34,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:34,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 14:21:34,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-23 14:21:34,441 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:34,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:34,588 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2022-11-23 14:21:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 14:21:34,589 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 14:21:34,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:34,590 INFO L225 Difference]: With dead ends: 54 [2022-11-23 14:21:34,590 INFO L226 Difference]: Without dead ends: 53 [2022-11-23 14:21:34,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2022-11-23 14:21:34,591 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 35 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:34,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 41 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:21:34,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-23 14:21:34,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2022-11-23 14:21:34,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.205128205128205) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:34,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-11-23 14:21:34,598 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 17 [2022-11-23 14:21:34,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:34,598 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-11-23 14:21:34,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:34,598 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-11-23 14:21:34,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 14:21:34,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:34,600 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2022-11-23 14:21:34,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:21:34,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:34,801 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:21:34,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:34,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2044036503, now seen corresponding path program 2 times [2022-11-23 14:21:34,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:34,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511978200] [2022-11-23 14:21:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:34,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:34,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:34,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511978200] [2022-11-23 14:21:34,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511978200] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:21:34,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197247358] [2022-11-23 14:21:34,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:21:34,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:34,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:34,902 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:21:34,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:21:34,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 14:21:34,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:21:34,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 14:21:34,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:21:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:34,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:21:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:35,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197247358] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:21:35,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1394813498] [2022-11-23 14:21:35,086 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 14:21:35,086 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:21:35,086 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:21:35,087 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:21:35,087 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:21:35,293 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:21:35,651 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '948#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-11-23 14:21:35,651 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:21:35,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:21:35,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-11-23 14:21:35,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052612675] [2022-11-23 14:21:35,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:21:35,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 14:21:35,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:35,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 14:21:35,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:21:35,653 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 16 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:35,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:35,815 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2022-11-23 14:21:35,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 14:21:35,815 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-23 14:21:35,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:35,816 INFO L225 Difference]: With dead ends: 60 [2022-11-23 14:21:35,816 INFO L226 Difference]: Without dead ends: 51 [2022-11-23 14:21:35,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-11-23 14:21:35,817 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 61 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:35,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 44 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:21:35,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-23 14:21:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2022-11-23 14:21:35,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.125) internal successors, (45), 42 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:35,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2022-11-23 14:21:35,823 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 20 [2022-11-23 14:21:35,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:35,823 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2022-11-23 14:21:35,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:35,824 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2022-11-23 14:21:35,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 14:21:35,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:35,824 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1] [2022-11-23 14:21:35,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:21:36,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 14:21:36,031 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:21:36,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:36,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1490246989, now seen corresponding path program 2 times [2022-11-23 14:21:36,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:36,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427845508] [2022-11-23 14:21:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:36,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:36,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:36,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427845508] [2022-11-23 14:21:36,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427845508] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:21:36,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822237662] [2022-11-23 14:21:36,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:21:36,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:36,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:36,144 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:21:36,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:21:36,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 14:21:36,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:21:36,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:21:36,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:21:36,268 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:36,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:21:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:36,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822237662] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:21:36,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [329801549] [2022-11-23 14:21:36,374 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:21:36,375 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:21:36,375 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:21:36,375 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:21:36,375 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:21:36,529 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:21:36,768 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1240#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:21:36,769 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:21:36,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:21:36,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-23 14:21:36,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675568758] [2022-11-23 14:21:36,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:21:36,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:21:36,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:36,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:21:36,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:21:36,771 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:36,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:36,833 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2022-11-23 14:21:36,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 14:21:36,834 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 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 25 [2022-11-23 14:21:36,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:36,835 INFO L225 Difference]: With dead ends: 73 [2022-11-23 14:21:36,835 INFO L226 Difference]: Without dead ends: 72 [2022-11-23 14:21:36,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:21:36,836 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 30 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:36,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 53 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:21:36,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-23 14:21:36,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2022-11-23 14:21:36,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 59 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:36,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2022-11-23 14:21:36,845 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 25 [2022-11-23 14:21:36,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:36,846 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2022-11-23 14:21:36,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:36,846 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2022-11-23 14:21:36,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 14:21:36,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:36,847 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 1, 1, 1] [2022-11-23 14:21:36,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:21:37,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:37,053 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)] === [2022-11-23 14:21:37,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:37,053 INFO L85 PathProgramCache]: Analyzing trace with hash 113568117, now seen corresponding path program 2 times [2022-11-23 14:21:37,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:37,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359742434] [2022-11-23 14:21:37,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:37,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:37,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:37,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359742434] [2022-11-23 14:21:37,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359742434] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:21:37,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10906416] [2022-11-23 14:21:37,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:21:37,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:37,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:37,351 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:21:37,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 14:21:37,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-23 14:21:37,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:21:37,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 14:21:37,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:21:37,498 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:37,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:21:37,819 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:37,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10906416] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:21:37,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [330057983] [2022-11-23 14:21:37,822 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:21:37,822 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:21:37,822 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:21:37,822 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:21:37,822 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:21:37,946 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:21:38,414 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1646#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-11-23 14:21:38,414 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:21:38,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:21:38,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2022-11-23 14:21:38,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92679655] [2022-11-23 14:21:38,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:21:38,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-23 14:21:38,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:38,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-23 14:21:38,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=937, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 14:21:38,417 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 30 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 30 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:38,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:38,761 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-11-23 14:21:38,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-23 14:21:38,762 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 30 states have internal predecessors, (73), 0 states have call successors, (0), 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 37 [2022-11-23 14:21:38,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:38,763 INFO L225 Difference]: With dead ends: 108 [2022-11-23 14:21:38,763 INFO L226 Difference]: Without dead ends: 107 [2022-11-23 14:21:38,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 84 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=582, Invalid=1770, Unknown=0, NotChecked=0, Total=2352 [2022-11-23 14:21:38,764 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 108 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:38,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 54 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:21:38,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-23 14:21:38,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2022-11-23 14:21:38,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 81 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:38,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2022-11-23 14:21:38,777 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 37 [2022-11-23 14:21:38,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:38,777 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2022-11-23 14:21:38,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 30 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:38,778 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2022-11-23 14:21:38,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-23 14:21:38,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:38,780 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2022-11-23 14:21:38,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 14:21:38,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 14:21:38,986 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:21:38,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:38,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1126382697, now seen corresponding path program 3 times [2022-11-23 14:21:38,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:38,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912271292] [2022-11-23 14:21:38,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:38,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:39,213 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:39,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:39,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912271292] [2022-11-23 14:21:39,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912271292] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:21:39,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855217303] [2022-11-23 14:21:39,214 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:21:39,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:39,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:39,215 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:21:39,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 14:21:39,269 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:21:39,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:21:39,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 14:21:39,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:21:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:39,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:21:39,658 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:39,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855217303] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:21:39,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [578519295] [2022-11-23 14:21:39,660 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 14:21:39,660 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:21:39,660 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:21:39,661 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:21:39,661 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:21:39,811 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:21:40,331 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2165#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-11-23 14:21:40,331 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:21:40,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:21:40,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-11-23 14:21:40,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579099587] [2022-11-23 14:21:40,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:21:40,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 14:21:40,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:40,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 14:21:40,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1046, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 14:21:40,334 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:40,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:40,719 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2022-11-23 14:21:40,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-23 14:21:40,720 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-23 14:21:40,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:40,721 INFO L225 Difference]: With dead ends: 110 [2022-11-23 14:21:40,721 INFO L226 Difference]: Without dead ends: 93 [2022-11-23 14:21:40,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 91 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=637, Invalid=1913, Unknown=0, NotChecked=0, Total=2550 [2022-11-23 14:21:40,726 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 178 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:40,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 60 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:21:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-23 14:21:40,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2022-11-23 14:21:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 80 states have (on average 1.0875) internal successors, (87), 82 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2022-11-23 14:21:40,747 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 40 [2022-11-23 14:21:40,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:40,748 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2022-11-23 14:21:40,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:40,748 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2022-11-23 14:21:40,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-23 14:21:40,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:40,749 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1] [2022-11-23 14:21:40,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:21:40,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 14:21:40,951 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:21:40,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:40,951 INFO L85 PathProgramCache]: Analyzing trace with hash 172754355, now seen corresponding path program 3 times [2022-11-23 14:21:40,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:40,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607194524] [2022-11-23 14:21:40,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:40,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:41,198 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:41,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:41,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607194524] [2022-11-23 14:21:41,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607194524] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:21:41,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952016228] [2022-11-23 14:21:41,199 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:21:41,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:41,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:41,201 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:21:41,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 14:21:41,260 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:21:41,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:21:41,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 14:21:41,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:21:41,347 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:41,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:21:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:41,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952016228] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:21:41,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [33956071] [2022-11-23 14:21:41,640 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:21:41,640 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:21:41,641 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:21:41,641 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:21:41,641 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:21:41,768 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:21:42,147 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2771#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:21:42,147 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:21:42,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:21:42,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-23 14:21:42,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144863156] [2022-11-23 14:21:42,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:21:42,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 14:21:42,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:42,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 14:21:42,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2022-11-23 14:21:42,149 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 24 states, 23 states have (on average 4.739130434782608) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:42,270 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2022-11-23 14:21:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 14:21:42,271 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.739130434782608) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 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 55 [2022-11-23 14:21:42,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:42,274 INFO L225 Difference]: With dead ends: 149 [2022-11-23 14:21:42,274 INFO L226 Difference]: Without dead ends: 148 [2022-11-23 14:21:42,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 138 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2022-11-23 14:21:42,275 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 70 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:42,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 98 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:21:42,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-23 14:21:42,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 120. [2022-11-23 14:21:42,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 117 states have (on average 1.1452991452991452) internal successors, (134), 119 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:42,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 134 transitions. [2022-11-23 14:21:42,296 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 134 transitions. Word has length 55 [2022-11-23 14:21:42,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:42,296 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 134 transitions. [2022-11-23 14:21:42,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.739130434782608) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:42,296 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 134 transitions. [2022-11-23 14:21:42,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 14:21:42,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:42,297 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 1, 1, 1] [2022-11-23 14:21:42,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 14:21:42,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:42,498 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:21:42,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:42,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1901531787, now seen corresponding path program 3 times [2022-11-23 14:21:42,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:42,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830537874] [2022-11-23 14:21:42,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:42,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:43,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:43,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830537874] [2022-11-23 14:21:43,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830537874] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:21:43,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227459775] [2022-11-23 14:21:43,190 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:21:43,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:43,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:43,191 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:21:43,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 14:21:43,264 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:21:43,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:21:43,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-23 14:21:43,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:21:43,423 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:43,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:21:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:44,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227459775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:21:44,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1376306532] [2022-11-23 14:21:44,430 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:21:44,430 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:21:44,431 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:21:44,431 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:21:44,431 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:21:44,570 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:21:45,344 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3609#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-11-23 14:21:45,344 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:21:45,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:21:45,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2022-11-23 14:21:45,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179023678] [2022-11-23 14:21:45,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:21:45,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-23 14:21:45,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:45,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-23 14:21:45,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1005, Invalid=3417, Unknown=0, NotChecked=0, Total=4422 [2022-11-23 14:21:45,349 INFO L87 Difference]: Start difference. First operand 120 states and 134 transitions. Second operand has 62 states, 61 states have (on average 2.5081967213114753) internal successors, (153), 62 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:46,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:46,384 INFO L93 Difference]: Finished difference Result 216 states and 231 transitions. [2022-11-23 14:21:46,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-23 14:21:46,385 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.5081967213114753) internal successors, (153), 62 states have internal predecessors, (153), 0 states have call successors, (0), 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 77 [2022-11-23 14:21:46,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:46,386 INFO L225 Difference]: With dead ends: 216 [2022-11-23 14:21:46,386 INFO L226 Difference]: Without dead ends: 215 [2022-11-23 14:21:46,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 180 SyntacticMatches, 15 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3420 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2430, Invalid=6882, Unknown=0, NotChecked=0, Total=9312 [2022-11-23 14:21:46,390 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 237 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:46,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 96 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:21:46,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-23 14:21:46,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 162. [2022-11-23 14:21:46,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 159 states have (on average 1.1635220125786163) internal successors, (185), 161 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:46,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 185 transitions. [2022-11-23 14:21:46,399 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 185 transitions. Word has length 77 [2022-11-23 14:21:46,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:46,399 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 185 transitions. [2022-11-23 14:21:46,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.5081967213114753) internal successors, (153), 62 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:46,400 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 185 transitions. [2022-11-23 14:21:46,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 14:21:46,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:46,401 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2022-11-23 14:21:46,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 14:21:46,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:46,608 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:21:46,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:46,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2085240727, now seen corresponding path program 4 times [2022-11-23 14:21:46,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:46,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854063834] [2022-11-23 14:21:46,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:46,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:47,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:47,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854063834] [2022-11-23 14:21:47,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854063834] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:21:47,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899639633] [2022-11-23 14:21:47,317 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:21:47,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:47,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:47,318 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:21:47,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 14:21:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:47,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-23 14:21:47,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:21:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:47,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:21:48,568 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:48,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899639633] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:21:48,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [878456624] [2022-11-23 14:21:48,570 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 14:21:48,570 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:21:48,571 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:21:48,571 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:21:48,571 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:21:48,695 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:21:49,513 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4652#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-11-23 14:21:49,513 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:21:49,514 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:21:49,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2022-11-23 14:21:49,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888655388] [2022-11-23 14:21:49,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:21:49,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-23 14:21:49,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:49,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-23 14:21:49,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1070, Invalid=3622, Unknown=0, NotChecked=0, Total=4692 [2022-11-23 14:21:49,519 INFO L87 Difference]: Start difference. First operand 162 states and 185 transitions. Second operand has 64 states, 63 states have (on average 2.5238095238095237) internal successors, (159), 64 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:50,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:50,498 INFO L93 Difference]: Finished difference Result 210 states and 225 transitions. [2022-11-23 14:21:50,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-23 14:21:50,499 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.5238095238095237) internal successors, (159), 64 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-23 14:21:50,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:50,503 INFO L225 Difference]: With dead ends: 210 [2022-11-23 14:21:50,503 INFO L226 Difference]: Without dead ends: 177 [2022-11-23 14:21:50,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 187 SyntacticMatches, 16 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3658 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2541, Invalid=7161, Unknown=0, NotChecked=0, Total=9702 [2022-11-23 14:21:50,512 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 342 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:50,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 110 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:21:50,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-23 14:21:50,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 163. [2022-11-23 14:21:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 160 states have (on average 1.06875) internal successors, (171), 162 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:50,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 171 transitions. [2022-11-23 14:21:50,520 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 171 transitions. Word has length 80 [2022-11-23 14:21:50,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:50,521 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 171 transitions. [2022-11-23 14:21:50,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.5238095238095237) internal successors, (159), 64 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:50,521 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 171 transitions. [2022-11-23 14:21:50,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 14:21:50,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:50,523 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1] [2022-11-23 14:21:50,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 14:21:50,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 14:21:50,729 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:21:50,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:50,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1112345523, now seen corresponding path program 4 times [2022-11-23 14:21:50,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:50,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822663017] [2022-11-23 14:21:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:50,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:51,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:51,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822663017] [2022-11-23 14:21:51,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822663017] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:21:51,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895576701] [2022-11-23 14:21:51,378 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:21:51,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:51,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:51,383 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:21:51,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 14:21:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:51,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-23 14:21:51,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:21:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:51,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:21:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:52,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895576701] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:21:52,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [441025806] [2022-11-23 14:21:52,625 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:21:52,626 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:21:52,626 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:21:52,626 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:21:52,626 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:21:52,746 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:21:53,606 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5886#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:21:53,606 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:21:53,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:21:53,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-23 14:21:53,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798472578] [2022-11-23 14:21:53,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:21:53,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-23 14:21:53,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:53,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-23 14:21:53,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2022-11-23 14:21:53,609 INFO L87 Difference]: Start difference. First operand 163 states and 171 transitions. Second operand has 48 states, 47 states have (on average 4.872340425531915) internal successors, (229), 48 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:53,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:53,816 INFO L93 Difference]: Finished difference Result 301 states and 324 transitions. [2022-11-23 14:21:53,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 14:21:53,817 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.872340425531915) internal successors, (229), 48 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-11-23 14:21:53,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:53,818 INFO L225 Difference]: With dead ends: 301 [2022-11-23 14:21:53,818 INFO L226 Difference]: Without dead ends: 300 [2022-11-23 14:21:53,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 294 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1832 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2022-11-23 14:21:53,820 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 198 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:53,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 203 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:21:53,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-23 14:21:53,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 240. [2022-11-23 14:21:53,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 237 states have (on average 1.139240506329114) internal successors, (270), 239 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:53,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 270 transitions. [2022-11-23 14:21:53,831 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 270 transitions. Word has length 115 [2022-11-23 14:21:53,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:53,832 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 270 transitions. [2022-11-23 14:21:53,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.872340425531915) internal successors, (229), 48 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:53,832 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 270 transitions. [2022-11-23 14:21:53,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 14:21:53,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:53,835 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 1, 1, 1] [2022-11-23 14:21:53,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 14:21:54,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 14:21:54,041 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:21:54,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:54,041 INFO L85 PathProgramCache]: Analyzing trace with hash -394988171, now seen corresponding path program 4 times [2022-11-23 14:21:54,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:54,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530203013] [2022-11-23 14:21:54,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:54,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:56,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2325 backedges. 0 proven. 2325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:56,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:56,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530203013] [2022-11-23 14:21:56,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530203013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:21:56,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333100316] [2022-11-23 14:21:56,555 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:21:56,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:56,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:56,556 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:21:56,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 14:21:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:56,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-23 14:21:56,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:21:56,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2325 backedges. 0 proven. 2325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:56,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:22:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2325 backedges. 0 proven. 2325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:00,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333100316] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:22:00,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2065339860] [2022-11-23 14:22:00,458 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:22:00,458 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:22:00,459 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:22:00,459 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:22:00,459 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:22:00,587 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:22:02,697 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7588#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-11-23 14:22:02,697 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:22:02,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:22:02,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 125 [2022-11-23 14:22:02,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473763675] [2022-11-23 14:22:02,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:22:02,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-11-23 14:22:02,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:02,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-11-23 14:22:02,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4045, Invalid=12985, Unknown=0, NotChecked=0, Total=17030 [2022-11-23 14:22:02,703 INFO L87 Difference]: Start difference. First operand 240 states and 270 transitions. Second operand has 126 states, 125 states have (on average 2.504) internal successors, (313), 126 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:06,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:06,046 INFO L93 Difference]: Finished difference Result 432 states and 463 transitions. [2022-11-23 14:22:06,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-11-23 14:22:06,047 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 2.504) internal successors, (313), 126 states have internal predecessors, (313), 0 states have call successors, (0), 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 [2022-11-23 14:22:06,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:06,049 INFO L225 Difference]: With dead ends: 432 [2022-11-23 14:22:06,049 INFO L226 Difference]: Without dead ends: 431 [2022-11-23 14:22:06,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 372 SyntacticMatches, 31 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14028 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=9966, Invalid=27090, Unknown=0, NotChecked=0, Total=37056 [2022-11-23 14:22:06,054 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 870 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:06,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 175 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:22:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-11-23 14:22:06,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 322. [2022-11-23 14:22:06,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 319 states have (on average 1.1567398119122256) internal successors, (369), 321 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:06,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 369 transitions. [2022-11-23 14:22:06,067 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 369 transitions. Word has length 157 [2022-11-23 14:22:06,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:06,068 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 369 transitions. [2022-11-23 14:22:06,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 2.504) internal successors, (313), 126 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 369 transitions. [2022-11-23 14:22:06,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-23 14:22:06,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:06,070 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1, 1, 1] [2022-11-23 14:22:06,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-23 14:22:06,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:06,276 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:22:06,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:06,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1117861783, now seen corresponding path program 5 times [2022-11-23 14:22:06,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:06,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225625784] [2022-11-23 14:22:06,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:06,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:08,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:08,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225625784] [2022-11-23 14:22:08,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225625784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:22:08,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67980113] [2022-11-23 14:22:08,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:22:08,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:08,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:08,799 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:08,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 14:22:09,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2022-11-23 14:22:09,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:22:09,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-23 14:22:09,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:09,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:22:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:12,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67980113] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:22:12,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [543186674] [2022-11-23 14:22:12,731 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 14:22:12,731 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:22:12,731 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:22:12,732 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:22:12,732 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:22:12,901 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:22:14,930 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9679#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-11-23 14:22:14,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:22:14,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:22:14,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 127 [2022-11-23 14:22:14,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764470548] [2022-11-23 14:22:14,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:22:14,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-11-23 14:22:14,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:14,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-11-23 14:22:14,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4174, Invalid=13382, Unknown=0, NotChecked=0, Total=17556 [2022-11-23 14:22:14,935 INFO L87 Difference]: Start difference. First operand 322 states and 369 transitions. Second operand has 128 states, 127 states have (on average 2.5118110236220472) internal successors, (319), 128 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:18,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:18,256 INFO L93 Difference]: Finished difference Result 410 states and 441 transitions. [2022-11-23 14:22:18,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-11-23 14:22:18,257 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 2.5118110236220472) internal successors, (319), 128 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-11-23 14:22:18,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:18,259 INFO L225 Difference]: With dead ends: 410 [2022-11-23 14:22:18,259 INFO L226 Difference]: Without dead ends: 345 [2022-11-23 14:22:18,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 379 SyntacticMatches, 32 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14506 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=10189, Invalid=27641, Unknown=0, NotChecked=0, Total=37830 [2022-11-23 14:22:18,263 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 785 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:18,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 188 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:22:18,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-23 14:22:18,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 323. [2022-11-23 14:22:18,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 320 states have (on average 1.059375) internal successors, (339), 322 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:18,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 339 transitions. [2022-11-23 14:22:18,276 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 339 transitions. Word has length 160 [2022-11-23 14:22:18,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:18,276 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 339 transitions. [2022-11-23 14:22:18,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 2.5118110236220472) internal successors, (319), 128 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:18,277 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 339 transitions. [2022-11-23 14:22:18,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-23 14:22:18,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:18,280 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 1, 1, 1] [2022-11-23 14:22:18,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 14:22:18,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:18,486 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:22:18,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:18,486 INFO L85 PathProgramCache]: Analyzing trace with hash -627566669, now seen corresponding path program 5 times [2022-11-23 14:22:18,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:18,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280926360] [2022-11-23 14:22:18,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:18,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:20,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:20,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:20,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280926360] [2022-11-23 14:22:20,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280926360] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:22:20,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87867121] [2022-11-23 14:22:20,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:22:20,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:20,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:20,646 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:20,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 14:22:21,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-23 14:22:21,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:22:21,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-23 14:22:21,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:21,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:22:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:24,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87867121] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:22:24,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1786040544] [2022-11-23 14:22:24,319 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:22:24,320 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:22:24,320 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:22:24,320 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:22:24,320 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:22:24,400 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:22:26,476 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12169#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:22:26,476 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:22:26,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:22:26,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-11-23 14:22:26,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119384306] [2022-11-23 14:22:26,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:22:26,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-23 14:22:26,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:26,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-23 14:22:26,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4573, Invalid=5527, Unknown=0, NotChecked=0, Total=10100 [2022-11-23 14:22:26,479 INFO L87 Difference]: Start difference. First operand 323 states and 339 transitions. Second operand has 96 states, 95 states have (on average 4.936842105263158) internal successors, (469), 96 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:26,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:26,960 INFO L93 Difference]: Finished difference Result 605 states and 652 transitions. [2022-11-23 14:22:26,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-23 14:22:26,961 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.936842105263158) internal successors, (469), 96 states have internal predecessors, (469), 0 states have call successors, (0), 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 235 [2022-11-23 14:22:26,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:26,964 INFO L225 Difference]: With dead ends: 605 [2022-11-23 14:22:26,964 INFO L226 Difference]: Without dead ends: 604 [2022-11-23 14:22:26,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 606 SyntacticMatches, 46 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7136 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=4573, Invalid=5527, Unknown=0, NotChecked=0, Total=10100 [2022-11-23 14:22:26,966 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 430 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:26,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 389 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:22:26,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-11-23 14:22:26,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 480. [2022-11-23 14:22:26,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 477 states have (on average 1.1362683438155137) internal successors, (542), 479 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:26,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 542 transitions. [2022-11-23 14:22:26,985 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 542 transitions. Word has length 235 [2022-11-23 14:22:26,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:26,985 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 542 transitions. [2022-11-23 14:22:26,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.936842105263158) internal successors, (469), 96 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:26,986 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 542 transitions. [2022-11-23 14:22:26,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-23 14:22:26,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:26,991 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 62, 1, 1, 1] [2022-11-23 14:22:26,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 14:22:27,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:27,197 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:22:27,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:27,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1273166475, now seen corresponding path program 5 times [2022-11-23 14:22:27,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:27,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457994504] [2022-11-23 14:22:27,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:27,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9765 backedges. 0 proven. 9765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:36,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:36,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457994504] [2022-11-23 14:22:36,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457994504] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:22:36,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606098406] [2022-11-23 14:22:36,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:22:36,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:36,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:36,076 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:36,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 14:22:36,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2022-11-23 14:22:36,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:22:36,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 127 conjunts are in the unsatisfiable core [2022-11-23 14:22:36,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9765 backedges. 0 proven. 9765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:37,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:22:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9765 backedges. 0 proven. 9765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:50,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606098406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:22:50,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [642454320] [2022-11-23 14:22:50,451 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:22:50,451 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:22:50,451 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:22:50,452 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:22:50,452 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:22:50,566 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:22:57,373 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15599#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-11-23 14:22:57,374 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:22:57,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:22:57,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127, 127] total 253 [2022-11-23 14:22:57,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76283679] [2022-11-23 14:22:57,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:22:57,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 254 states [2022-11-23 14:22:57,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:57,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2022-11-23 14:22:57,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16269, Invalid=50553, Unknown=0, NotChecked=0, Total=66822 [2022-11-23 14:22:57,380 INFO L87 Difference]: Start difference. First operand 480 states and 542 transitions. Second operand has 254 states, 253 states have (on average 2.5019762845849804) internal successors, (633), 254 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:11,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:11,379 INFO L93 Difference]: Finished difference Result 864 states and 927 transitions. [2022-11-23 14:23:11,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2022-11-23 14:23:11,381 INFO L78 Accepts]: Start accepts. Automaton has has 254 states, 253 states have (on average 2.5019762845849804) internal successors, (633), 254 states have internal predecessors, (633), 0 states have call successors, (0), 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 317 [2022-11-23 14:23:11,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:11,383 INFO L225 Difference]: With dead ends: 864 [2022-11-23 14:23:11,383 INFO L226 Difference]: Without dead ends: 863 [2022-11-23 14:23:11,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1202 GetRequests, 756 SyntacticMatches, 63 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56748 ImplicationChecksByTransitivity, 33.9s TimeCoverageRelationStatistics Valid=40398, Invalid=107442, Unknown=0, NotChecked=0, Total=147840 [2022-11-23 14:23:11,393 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1997 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:11,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1997 Valid, 338 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:23:11,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-11-23 14:23:11,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 642. [2022-11-23 14:23:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 639 states have (on average 1.1533646322378717) internal successors, (737), 641 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:11,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 737 transitions. [2022-11-23 14:23:11,417 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 737 transitions. Word has length 317 [2022-11-23 14:23:11,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:11,418 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 737 transitions. [2022-11-23 14:23:11,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 254 states, 253 states have (on average 2.5019762845849804) internal successors, (633), 254 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:11,419 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 737 transitions. [2022-11-23 14:23:11,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-23 14:23:11,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:11,423 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 63, 1, 1, 1, 1, 1] [2022-11-23 14:23:11,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-23 14:23:11,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:23:11,630 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:23:11,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:11,630 INFO L85 PathProgramCache]: Analyzing trace with hash -46192745, now seen corresponding path program 6 times [2022-11-23 14:23:11,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:11,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323787066] [2022-11-23 14:23:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:11,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:20,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:20,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323787066] [2022-11-23 14:23:20,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323787066] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:23:20,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114823839] [2022-11-23 14:23:20,661 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:23:20,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:23:20,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:23:20,662 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:23:20,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-23 14:23:20,808 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:23:20,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:23:20,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 128 conjunts are in the unsatisfiable core [2022-11-23 14:23:20,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:23:21,308 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:21,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:23:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:34,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114823839] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:23:34,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [813881076] [2022-11-23 14:23:34,522 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 14:23:34,522 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:23:34,523 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:23:34,523 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:23:34,523 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:23:34,647 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:23:40,979 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19786#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-11-23 14:23:40,979 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:23:40,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:23:40,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128, 128] total 255 [2022-11-23 14:23:40,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541686929] [2022-11-23 14:23:40,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:23:40,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 256 states [2022-11-23 14:23:40,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:40,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2022-11-23 14:23:40,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16526, Invalid=51334, Unknown=0, NotChecked=0, Total=67860 [2022-11-23 14:23:40,987 INFO L87 Difference]: Start difference. First operand 642 states and 737 transitions. Second operand has 256 states, 255 states have (on average 2.5058823529411764) internal successors, (639), 256 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:54,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:54,649 INFO L93 Difference]: Finished difference Result 810 states and 873 transitions. [2022-11-23 14:23:54,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2022-11-23 14:23:54,652 INFO L78 Accepts]: Start accepts. Automaton has has 256 states, 255 states have (on average 2.5058823529411764) internal successors, (639), 256 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-23 14:23:54,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:54,655 INFO L225 Difference]: With dead ends: 810 [2022-11-23 14:23:54,656 INFO L226 Difference]: Without dead ends: 681 [2022-11-23 14:23:54,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1212 GetRequests, 763 SyntacticMatches, 64 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57706 ImplicationChecksByTransitivity, 33.3s TimeCoverageRelationStatistics Valid=40845, Invalid=108537, Unknown=0, NotChecked=0, Total=149382 [2022-11-23 14:23:54,671 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1825 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:54,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1825 Valid, 339 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:23:54,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-11-23 14:23:54,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 643. [2022-11-23 14:23:54,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 640 states have (on average 1.0546875) internal successors, (675), 642 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:54,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 675 transitions. [2022-11-23 14:23:54,702 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 675 transitions. Word has length 320 [2022-11-23 14:23:54,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:54,703 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 675 transitions. [2022-11-23 14:23:54,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 256 states, 255 states have (on average 2.5058823529411764) internal successors, (639), 256 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:54,704 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 675 transitions. [2022-11-23 14:23:54,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-11-23 14:23:54,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:54,709 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 1, 1, 1] [2022-11-23 14:23:54,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-23 14:23:54,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-23 14:23:54,916 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:23:54,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:54,916 INFO L85 PathProgramCache]: Analyzing trace with hash 374484915, now seen corresponding path program 6 times [2022-11-23 14:23:54,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:54,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260203058] [2022-11-23 14:23:54,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:54,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:24:01,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:01,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260203058] [2022-11-23 14:24:01,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260203058] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:24:01,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129534754] [2022-11-23 14:24:01,861 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:24:01,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:24:01,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:24:01,862 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:24:01,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-23 14:24:02,087 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:24:02,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:24:02,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-23 14:24:02,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:24:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:24:02,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:24:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:24:13,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129534754] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:24:13,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [838116295] [2022-11-23 14:24:13,928 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:24:13,928 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:24:13,928 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:24:13,929 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:24:13,929 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:24:14,032 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:24:21,746 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24788#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:24:21,747 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:24:21,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:24:21,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-11-23 14:24:21,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958491850] [2022-11-23 14:24:21,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:24:21,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-23 14:24:21,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:24:21,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-23 14:24:21,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18349, Invalid=20263, Unknown=0, NotChecked=0, Total=38612 [2022-11-23 14:24:21,755 INFO L87 Difference]: Start difference. First operand 643 states and 675 transitions. Second operand has 192 states, 191 states have (on average 4.968586387434555) internal successors, (949), 192 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:24:24,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:24,091 INFO L93 Difference]: Finished difference Result 1213 states and 1308 transitions. [2022-11-23 14:24:24,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-23 14:24:24,092 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.968586387434555) internal successors, (949), 192 states have internal predecessors, (949), 0 states have call successors, (0), 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 475 [2022-11-23 14:24:24,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:24,095 INFO L225 Difference]: With dead ends: 1213 [2022-11-23 14:24:24,095 INFO L226 Difference]: Without dead ends: 1212 [2022-11-23 14:24:24,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1519 GetRequests, 1230 SyntacticMatches, 94 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28112 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=18349, Invalid=20263, Unknown=0, NotChecked=0, Total=38612 [2022-11-23 14:24:24,099 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1030 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:24,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 779 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:24:24,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2022-11-23 14:24:24,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 960. [2022-11-23 14:24:24,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 957 states have (on average 1.134796238244514) internal successors, (1086), 959 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:24:24,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1086 transitions. [2022-11-23 14:24:24,134 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1086 transitions. Word has length 475 [2022-11-23 14:24:24,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:24,135 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 1086 transitions. [2022-11-23 14:24:24,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.968586387434555) internal successors, (949), 192 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:24:24,136 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1086 transitions. [2022-11-23 14:24:24,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2022-11-23 14:24:24,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:24,141 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 127, 127, 126, 1, 1, 1] [2022-11-23 14:24:24,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-23 14:24:24,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-23 14:24:24,349 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:24:24,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:24,349 INFO L85 PathProgramCache]: Analyzing trace with hash 732767605, now seen corresponding path program 6 times [2022-11-23 14:24:24,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:24,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490279185] [2022-11-23 14:24:24,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:24,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:25:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 40005 backedges. 0 proven. 40005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:25:00,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:25:00,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490279185] [2022-11-23 14:25:00,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490279185] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:25:00,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361238897] [2022-11-23 14:25:00,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:25:00,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:25:00,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:25:00,920 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:25:00,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-23 14:25:01,212 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:25:01,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:25:01,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1424 conjuncts, 255 conjunts are in the unsatisfiable core [2022-11-23 14:25:01,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:25:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 40005 backedges. 0 proven. 40005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:25:02,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:25:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 40005 backedges. 0 proven. 40005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:25:54,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361238897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:25:54,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1368933232] [2022-11-23 14:25:54,474 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:25:54,475 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:25:54,475 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:25:54,475 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:25:54,475 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:25:54,592 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:26:19,756 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31674#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-11-23 14:26:19,756 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:26:19,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:26:19,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [255, 255, 255] total 509 [2022-11-23 14:26:19,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256579672] [2022-11-23 14:26:19,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:26:19,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 510 states [2022-11-23 14:26:19,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:19,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 510 interpolants. [2022-11-23 14:26:19,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65293, Invalid=199417, Unknown=0, NotChecked=0, Total=264710 [2022-11-23 14:26:19,777 INFO L87 Difference]: Start difference. First operand 960 states and 1086 transitions. Second operand has 510 states, 509 states have (on average 2.5009823182711197) internal successors, (1273), 510 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:35,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:35,661 INFO L93 Difference]: Finished difference Result 1728 states and 1855 transitions. [2022-11-23 14:27:35,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 510 states. [2022-11-23 14:27:35,662 INFO L78 Accepts]: Start accepts. Automaton has has 510 states, 509 states have (on average 2.5009823182711197) internal successors, (1273), 510 states have internal predecessors, (1273), 0 states have call successors, (0), 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 637 [2022-11-23 14:27:35,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:35,668 INFO L225 Difference]: With dead ends: 1728 [2022-11-23 14:27:35,668 INFO L226 Difference]: Without dead ends: 1727 [2022-11-23 14:27:35,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2418 GetRequests, 1524 SyntacticMatches, 127 SemanticMatches, 767 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228204 ImplicationChecksByTransitivity, 132.9s TimeCoverageRelationStatistics Valid=162702, Invalid=427890, Unknown=0, NotChecked=0, Total=590592 [2022-11-23 14:27:35,699 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4700 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4700 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:35,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4700 Valid, 604 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 14:27:35,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2022-11-23 14:27:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1282. [2022-11-23 14:27:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1279 states have (on average 1.1516810007818608) internal successors, (1473), 1281 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1473 transitions. [2022-11-23 14:27:35,741 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1473 transitions. Word has length 637 [2022-11-23 14:27:35,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:35,742 INFO L495 AbstractCegarLoop]: Abstraction has 1282 states and 1473 transitions. [2022-11-23 14:27:35,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 510 states, 509 states have (on average 2.5009823182711197) internal successors, (1273), 510 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:35,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1473 transitions. [2022-11-23 14:27:35,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2022-11-23 14:27:35,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:35,748 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 127, 127, 127, 1, 1, 1, 1, 1] [2022-11-23 14:27:35,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:35,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-23 14:27:35,959 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:27:35,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:35,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1438972009, now seen corresponding path program 7 times [2022-11-23 14:27:35,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:35,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560459363] [2022-11-23 14:27:35,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:35,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:28:14,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:14,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560459363] [2022-11-23 14:28:14,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560459363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:28:14,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857699345] [2022-11-23 14:28:14,503 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:28:14,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:28:14,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:28:14,507 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:28:14,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-23 14:28:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:14,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 256 conjunts are in the unsatisfiable core [2022-11-23 14:28:14,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:28:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:28:15,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:29:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:29:09,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857699345] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:29:09,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [274049166] [2022-11-23 14:29:09,194 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 14:29:09,195 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:29:09,195 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:29:09,195 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:29:09,195 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:29:09,317 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:29:31,359 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '40053#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-11-23 14:29:31,359 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:29:31,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:29:31,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [256, 256, 256] total 511 [2022-11-23 14:29:31,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331370177] [2022-11-23 14:29:31,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:29:31,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 512 states [2022-11-23 14:29:31,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:31,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 512 interpolants. [2022-11-23 14:29:31,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65806, Invalid=200966, Unknown=0, NotChecked=0, Total=266772 [2022-11-23 14:29:31,381 INFO L87 Difference]: Start difference. First operand 1282 states and 1473 transitions. Second operand has 512 states, 511 states have (on average 2.50293542074364) internal successors, (1279), 512 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:30:52,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:30:52,435 INFO L93 Difference]: Finished difference Result 1610 states and 1737 transitions. [2022-11-23 14:30:52,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 511 states. [2022-11-23 14:30:52,437 INFO L78 Accepts]: Start accepts. Automaton has has 512 states, 511 states have (on average 2.50293542074364) internal successors, (1279), 512 states have internal predecessors, (1279), 0 states have call successors, (0), 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 640 [2022-11-23 14:30:52,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:30:52,441 INFO L225 Difference]: With dead ends: 1610 [2022-11-23 14:30:52,442 INFO L226 Difference]: Without dead ends: 1353 [2022-11-23 14:30:52,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2428 GetRequests, 1531 SyntacticMatches, 128 SemanticMatches, 769 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230122 ImplicationChecksByTransitivity, 132.1s TimeCoverageRelationStatistics Valid=163597, Invalid=430073, Unknown=0, NotChecked=0, Total=593670 [2022-11-23 14:30:52,475 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4258 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4258 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:30:52,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4258 Valid, 634 Invalid, 1735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1602 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 14:30:52,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2022-11-23 14:30:52,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1283. [2022-11-23 14:30:52,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1280 states have (on average 1.05234375) internal successors, (1347), 1282 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:30:52,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1347 transitions. [2022-11-23 14:30:52,515 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1347 transitions. Word has length 640 [2022-11-23 14:30:52,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:30:52,516 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 1347 transitions. [2022-11-23 14:30:52,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 512 states, 511 states have (on average 2.50293542074364) internal successors, (1279), 512 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:30:52,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1347 transitions. [2022-11-23 14:30:52,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2022-11-23 14:30:52,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:52,526 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 190, 190, 190, 1, 1, 1] [2022-11-23 14:30:52,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-23 14:30:52,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:30:52,734 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:30:52,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:52,734 INFO L85 PathProgramCache]: Analyzing trace with hash 173432755, now seen corresponding path program 7 times [2022-11-23 14:30:52,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:30:52,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036490191] [2022-11-23 14:30:52,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:52,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:30:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:24,919 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:31:24,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:31:24,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036490191] [2022-11-23 14:31:24,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036490191] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:31:24,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228777394] [2022-11-23 14:31:24,920 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:31:24,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:31:24,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:31:24,921 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:31:24,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-23 14:31:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:25,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 2122 conjuncts, 193 conjunts are in the unsatisfiable core [2022-11-23 14:31:25,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:31:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:31:26,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:32:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:32:10,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228777394] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:32:10,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1992602475] [2022-11-23 14:32:10,666 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:32:10,666 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:32:10,667 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:32:10,667 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:32:10,667 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:32:10,747 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:32:34,374 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '50079#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:32:34,374 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:32:34,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:32:34,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2022-11-23 14:32:34,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250851084] [2022-11-23 14:32:34,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:32:34,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-23 14:32:34,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:32:34,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-23 14:32:34,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73549, Invalid=77383, Unknown=0, NotChecked=0, Total=150932 [2022-11-23 14:32:34,392 INFO L87 Difference]: Start difference. First operand 1283 states and 1347 transitions. Second operand has 384 states, 383 states have (on average 4.984334203655353) internal successors, (1909), 384 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:32:47,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:32:47,307 INFO L93 Difference]: Finished difference Result 2429 states and 2620 transitions. [2022-11-23 14:32:47,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-23 14:32:47,308 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.984334203655353) internal successors, (1909), 384 states have internal predecessors, (1909), 0 states have call successors, (0), 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 955 [2022-11-23 14:32:47,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:32:47,315 INFO L225 Difference]: With dead ends: 2429 [2022-11-23 14:32:47,315 INFO L226 Difference]: Without dead ends: 2428 [2022-11-23 14:32:47,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3055 GetRequests, 2478 SyntacticMatches, 190 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111536 ImplicationChecksByTransitivity, 80.4s TimeCoverageRelationStatistics Valid=73549, Invalid=77383, Unknown=0, NotChecked=0, Total=150932 [2022-11-23 14:32:47,325 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2390 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:32:47,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2390 Valid, 1544 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 14:32:47,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2022-11-23 14:32:47,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 1920. [2022-11-23 14:32:47,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1917 states have (on average 1.1340636411058946) internal successors, (2174), 1919 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:32:47,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2174 transitions. [2022-11-23 14:32:47,382 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2174 transitions. Word has length 955 [2022-11-23 14:32:47,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:32:47,383 INFO L495 AbstractCegarLoop]: Abstraction has 1920 states and 2174 transitions. [2022-11-23 14:32:47,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.984334203655353) internal successors, (1909), 384 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:32:47,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2174 transitions. [2022-11-23 14:32:47,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1278 [2022-11-23 14:32:47,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:32:47,398 INFO L195 NwaCegarLoop]: trace histogram [255, 255, 255, 255, 254, 1, 1, 1] [2022-11-23 14:32:47,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-23 14:32:47,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07466721-ac18-4cf0-a452-77dea358b159/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:32:47,607 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 14:32:47,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:32:47,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1681037963, now seen corresponding path program 7 times [2022-11-23 14:32:47,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:32:47,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926494582] [2022-11-23 14:32:47,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:32:47,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:32:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat