./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-easy2-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-easy2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0caa59e1faf0ad3d2791737919ecbef32e653ee10212e2c418a84055594f6a3c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 12:55:36,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:55:36,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:55:36,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:55:36,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:55:36,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:55:36,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:55:36,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:55:36,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:55:36,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:55:36,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:55:36,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:55:36,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:55:36,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:55:36,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:55:36,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:55:36,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:55:36,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:55:36,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:55:36,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:55:36,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:55:36,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:55:36,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:55:36,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:55:36,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:55:36,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:55:36,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:55:36,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:55:36,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:55:36,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:55:36,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:55:36,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:55:36,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:55:36,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:55:36,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:55:36,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:55:36,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:55:36,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:55:36,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:55:36,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:55:36,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:55:36,658 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 12:55:36,681 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:55:36,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:55:36,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:55:36,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:55:36,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:55:36,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:55:36,683 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:55:36,683 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:55:36,683 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:55:36,683 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:55:36,683 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:55:36,684 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:55:36,684 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:55:36,684 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:55:36,684 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:55:36,684 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:55:36,685 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:55:36,685 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:55:36,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:55:36,686 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 12:55:36,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:55:36,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:55:36,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:55:36,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:55:36,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:55:36,687 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 12:55:36,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:55:36,687 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:55:36,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:55:36,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:55:36,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:55:36,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:55:36,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:55:36,688 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:55:36,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:55:36,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:55:36,689 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:55:36,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:55:36,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:55:36,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:55:36,689 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_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0caa59e1faf0ad3d2791737919ecbef32e653ee10212e2c418a84055594f6a3c [2022-12-14 12:55:36,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:55:36,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:55:36,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:55:36,893 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:55:36,894 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:55:36,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-easy2-2.c [2022-12-14 12:55:39,465 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:55:39,606 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:55:39,607 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-easy2-2.c [2022-12-14 12:55:39,611 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/data/9463b7035/963ac74766ae4869b694ed43e65f512a/FLAGdb47b0b5c [2022-12-14 12:55:39,621 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/data/9463b7035/963ac74766ae4869b694ed43e65f512a [2022-12-14 12:55:39,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:55:39,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:55:39,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:55:39,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:55:39,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:55:39,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:55:39" (1/1) ... [2022-12-14 12:55:39,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5089b10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:55:39, skipping insertion in model container [2022-12-14 12:55:39,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:55:39" (1/1) ... [2022-12-14 12:55:39,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:55:39,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:55:39,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:55:39,747 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:55:39,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:55:39,769 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:55:39,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:55:39 WrapperNode [2022-12-14 12:55:39,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:55:39,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:55:39,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:55:39,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:55:39,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:55:39" (1/1) ... [2022-12-14 12:55:39,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:55:39" (1/1) ... [2022-12-14 12:55:39,796 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-12-14 12:55:39,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:55:39,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:55:39,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:55:39,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:55:39,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:55:39" (1/1) ... [2022-12-14 12:55:39,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:55:39" (1/1) ... [2022-12-14 12:55:39,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:55:39" (1/1) ... [2022-12-14 12:55:39,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:55:39" (1/1) ... [2022-12-14 12:55:39,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:55:39" (1/1) ... [2022-12-14 12:55:39,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:55:39" (1/1) ... [2022-12-14 12:55:39,813 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:55:39" (1/1) ... [2022-12-14 12:55:39,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:55:39" (1/1) ... [2022-12-14 12:55:39,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:55:39,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:55:39,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:55:39,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:55:39,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:55:39" (1/1) ... [2022-12-14 12:55:39,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:55:39,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:55:39,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:55:39,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:55:39,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:55:39,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:55:39,911 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:55:39,913 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:55:39,984 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:55:40,001 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:55:40,001 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 12:55:40,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:55:40 BoogieIcfgContainer [2022-12-14 12:55:40,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:55:40,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:55:40,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:55:40,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:55:40,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:55:39" (1/3) ... [2022-12-14 12:55:40,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648b082e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:55:40, skipping insertion in model container [2022-12-14 12:55:40,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:55:39" (2/3) ... [2022-12-14 12:55:40,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648b082e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:55:40, skipping insertion in model container [2022-12-14 12:55:40,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:55:40" (3/3) ... [2022-12-14 12:55:40,011 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-easy2-2.c [2022-12-14 12:55:40,026 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:55:40,026 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 12:55:40,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:55:40,073 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;@34605e80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:55:40,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 12:55:40,077 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:40,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:55:40,081 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:55:40,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:55:40,082 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)] === [2022-12-14 12:55:40,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:40,087 INFO L85 PathProgramCache]: Analyzing trace with hash 60896, now seen corresponding path program 1 times [2022-12-14 12:55:40,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:40,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348517028] [2022-12-14 12:55:40,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:40,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:40,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:55:40,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348517028] [2022-12-14 12:55:40,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348517028] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:55:40,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:55:40,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:55:40,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841205508] [2022-12-14 12:55:40,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:55:40,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:55:40,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:55:40,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:55:40,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:55:40,259 INFO L87 Difference]: Start difference. First operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:40,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:55:40,287 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-12-14 12:55:40,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:55:40,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 12:55:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:55:40,298 INFO L225 Difference]: With dead ends: 15 [2022-12-14 12:55:40,298 INFO L226 Difference]: Without dead ends: 13 [2022-12-14 12:55:40,300 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 [2022-12-14 12:55:40,304 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:55:40,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 9 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:55:40,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-12-14 12:55:40,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-12-14 12:55:40,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.625) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-12-14 12:55:40,335 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 3 [2022-12-14 12:55:40,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:55:40,336 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-12-14 12:55:40,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:40,336 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-12-14 12:55:40,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 12:55:40,337 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:55:40,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 12:55:40,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:55:40,337 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 12:55:40,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:40,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1887821, now seen corresponding path program 1 times [2022-12-14 12:55:40,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:40,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623749730] [2022-12-14 12:55:40,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:40,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:40,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:55:40,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623749730] [2022-12-14 12:55:40,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623749730] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:55:40,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:55:40,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:55:40,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630459794] [2022-12-14 12:55:40,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:55:40,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:55:40,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:55:40,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:55:40,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:55:40,371 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:40,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:55:40,384 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-12-14 12:55:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:55:40,384 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 [2022-12-14 12:55:40,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:55:40,385 INFO L225 Difference]: With dead ends: 17 [2022-12-14 12:55:40,385 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 12:55:40,386 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 [2022-12-14 12:55:40,387 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:55:40,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:55:40,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 12:55:40,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 12:55:40,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:40,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-12-14 12:55:40,399 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 4 [2022-12-14 12:55:40,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:55:40,399 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-12-14 12:55:40,400 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) [2022-12-14 12:55:40,400 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-12-14 12:55:40,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:55:40,400 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:55:40,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:55:40,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:55:40,401 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 12:55:40,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:40,402 INFO L85 PathProgramCache]: Analyzing trace with hash 58522498, now seen corresponding path program 1 times [2022-12-14 12:55:40,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:40,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581414960] [2022-12-14 12:55:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:40,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:40,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:55:40,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581414960] [2022-12-14 12:55:40,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581414960] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:55:40,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:55:40,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:55:40,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187417860] [2022-12-14 12:55:40,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:55:40,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:55:40,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:55:40,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:55:40,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:55:40,436 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:40,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:55:40,449 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-12-14 12:55:40,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:55:40,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 12:55:40,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:55:40,450 INFO L225 Difference]: With dead ends: 19 [2022-12-14 12:55:40,450 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 12:55:40,451 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 [2022-12-14 12:55:40,452 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:55:40,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:55:40,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 12:55:40,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-12-14 12:55:40,456 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) [2022-12-14 12:55:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-12-14 12:55:40,456 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 5 [2022-12-14 12:55:40,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:55:40,457 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-12-14 12:55:40,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:40,457 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-12-14 12:55:40,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 12:55:40,457 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:55:40,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 12:55:40,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 12:55:40,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 12:55:40,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:40,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1814197487, now seen corresponding path program 1 times [2022-12-14 12:55:40,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:40,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573635528] [2022-12-14 12:55:40,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:40,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:40,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:55:40,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573635528] [2022-12-14 12:55:40,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573635528] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:55:40,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:55:40,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:55:40,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191037089] [2022-12-14 12:55:40,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:55:40,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:55:40,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:55:40,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:55:40,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:55:40,492 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:40,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:55:40,502 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-12-14 12:55:40,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:55:40,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 12:55:40,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:55:40,503 INFO L225 Difference]: With dead ends: 17 [2022-12-14 12:55:40,503 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 12:55:40,503 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 [2022-12-14 12:55:40,505 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:55:40,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 8 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:55:40,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 12:55:40,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 12:55:40,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:40,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-12-14 12:55:40,510 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 6 [2022-12-14 12:55:40,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:55:40,510 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-12-14 12:55:40,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:40,510 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-12-14 12:55:40,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 12:55:40,511 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:55:40,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:55:40,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 12:55:40,511 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 12:55:40,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:40,512 INFO L85 PathProgramCache]: Analyzing trace with hash 405547300, now seen corresponding path program 1 times [2022-12-14 12:55:40,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:40,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992077993] [2022-12-14 12:55:40,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:40,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:40,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:55:40,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992077993] [2022-12-14 12:55:40,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992077993] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:55:40,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:55:40,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:55:40,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688875334] [2022-12-14 12:55:40,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:55:40,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:55:40,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:55:40,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:55:40,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:55:40,548 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2022-12-14 12:55:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:55:40,558 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-14 12:55:40,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:55:40,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2022-12-14 12:55:40,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:55:40,559 INFO L225 Difference]: With dead ends: 16 [2022-12-14 12:55:40,559 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 12:55:40,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:55:40,561 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:55:40,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:55:40,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 12:55:40,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 12:55:40,565 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) [2022-12-14 12:55:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 12:55:40,565 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2022-12-14 12:55:40,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:55:40,566 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 12:55:40,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2022-12-14 12:55:40,566 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 12:55:40,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 12:55:40,566 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:55:40,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:55:40,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 12:55:40,567 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 12:55:40,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:40,568 INFO L85 PathProgramCache]: Analyzing trace with hash -312935535, now seen corresponding path program 1 times [2022-12-14 12:55:40,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:40,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173934567] [2022-12-14 12:55:40,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:40,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:40,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:55:40,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173934567] [2022-12-14 12:55:40,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173934567] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:55:40,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:55:40,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:55:40,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098545291] [2022-12-14 12:55:40,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:55:40,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:55:40,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:55:40,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:55:40,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:55:40,601 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:40,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:55:40,609 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-12-14 12:55:40,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:55:40,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 12:55:40,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:55:40,610 INFO L225 Difference]: With dead ends: 15 [2022-12-14 12:55:40,611 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 12:55:40,611 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 [2022-12-14 12:55:40,612 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:55:40,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:55:40,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 12:55:40,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-12-14 12:55:40,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) 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) [2022-12-14 12:55:40,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-12-14 12:55:40,616 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2022-12-14 12:55:40,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:55:40,617 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-12-14 12:55:40,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:40,617 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-12-14 12:55:40,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 12:55:40,617 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:55:40,618 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:55:40,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 12:55:40,618 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)] === [2022-12-14 12:55:40,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:40,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1711517210, now seen corresponding path program 1 times [2022-12-14 12:55:40,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:40,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564499187] [2022-12-14 12:55:40,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:40,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:40,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:40,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:55:40,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564499187] [2022-12-14 12:55:40,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564499187] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:55:40,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786125915] [2022-12-14 12:55:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:40,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:55:40,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:55:40,666 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:55:40,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:55:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:40,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:55:40,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:55:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:40,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:55:40,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:40,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786125915] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:55:40,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [590237598] [2022-12-14 12:55:40,794 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 12:55:40,794 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:55:40,798 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:55:40,802 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:55:40,802 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:55:40,974 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:55:41,161 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '314#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-12-14 12:55:41,161 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:55:41,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:55:41,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-14 12:55:41,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891839866] [2022-12-14 12:55:41,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:55:41,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:55:41,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:55:41,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:55:41,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-12-14 12:55:41,163 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:41,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:55:41,184 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-12-14 12:55:41,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:55:41,185 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 12:55:41,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:55:41,185 INFO L225 Difference]: With dead ends: 37 [2022-12-14 12:55:41,185 INFO L226 Difference]: Without dead ends: 36 [2022-12-14 12:55:41,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-12-14 12:55:41,186 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:55:41,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:55:41,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-14 12:55:41,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2022-12-14 12:55:41,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:41,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2022-12-14 12:55:41,190 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 11 [2022-12-14 12:55:41,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:55:41,190 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2022-12-14 12:55:41,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:41,190 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-12-14 12:55:41,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 12:55:41,191 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:55:41,191 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 12:55:41,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:55:41,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:55:41,393 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 12:55:41,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:41,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1517426005, now seen corresponding path program 1 times [2022-12-14 12:55:41,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:41,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383246249] [2022-12-14 12:55:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:41,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:41,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:41,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:55:41,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383246249] [2022-12-14 12:55:41,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383246249] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:55:41,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497832977] [2022-12-14 12:55:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:41,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:55:41,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:55:41,520 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:55:41,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 12:55:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:41,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:55:41,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:55:41,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:41,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:55:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:41,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497832977] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:55:41,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1745810496] [2022-12-14 12:55:41,612 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 12:55:41,612 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:55:41,612 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:55:41,612 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:55:41,612 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:55:41,677 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:55:41,830 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '474#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-12-14 12:55:41,831 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:55:41,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:55:41,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-14 12:55:41,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978132512] [2022-12-14 12:55:41,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:55:41,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:55:41,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:55:41,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:55:41,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-12-14 12:55:41,832 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:41,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:55:41,850 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2022-12-14 12:55:41,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:55:41,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 12:55:41,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:55:41,851 INFO L225 Difference]: With dead ends: 36 [2022-12-14 12:55:41,851 INFO L226 Difference]: Without dead ends: 35 [2022-12-14 12:55:41,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-12-14 12:55:41,852 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:55:41,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 29 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:55:41,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-14 12:55:41,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-12-14 12:55:41,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 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) [2022-12-14 12:55:41,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2022-12-14 12:55:41,857 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 12 [2022-12-14 12:55:41,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:55:41,857 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2022-12-14 12:55:41,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:41,858 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2022-12-14 12:55:41,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-14 12:55:41,858 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:55:41,858 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1] [2022-12-14 12:55:41,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 12:55:42,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:55:42,068 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 12:55:42,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:42,070 INFO L85 PathProgramCache]: Analyzing trace with hash -722565875, now seen corresponding path program 2 times [2022-12-14 12:55:42,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:42,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437002259] [2022-12-14 12:55:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:42,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:42,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:55:42,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437002259] [2022-12-14 12:55:42,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437002259] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:55:42,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873372423] [2022-12-14 12:55:42,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:55:42,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:55:42,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:55:42,275 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:55:42,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 12:55:42,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 12:55:42,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:55:42,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:55:42,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:55:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:42,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:55:42,414 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:42,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873372423] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:55:42,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [959977781] [2022-12-14 12:55:42,416 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 12:55:42,417 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:55:42,417 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:55:42,417 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:55:42,417 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:55:42,486 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:55:42,641 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '760#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-12-14 12:55:42,642 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:55:42,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:55:42,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-14 12:55:42,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395901066] [2022-12-14 12:55:42,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:55:42,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 12:55:42,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:55:42,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 12:55:42,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2022-12-14 12:55:42,644 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:42,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:55:42,681 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2022-12-14 12:55:42,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 12:55:42,682 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-12-14 12:55:42,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:55:42,682 INFO L225 Difference]: With dead ends: 82 [2022-12-14 12:55:42,682 INFO L226 Difference]: Without dead ends: 81 [2022-12-14 12:55:42,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2022-12-14 12:55:42,684 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:55:42,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 64 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:55:42,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-14 12:55:42,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2022-12-14 12:55:42,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.0945945945945945) internal successors, (81), 75 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:42,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2022-12-14 12:55:42,690 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 32 [2022-12-14 12:55:42,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:55:42,691 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2022-12-14 12:55:42,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:42,691 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2022-12-14 12:55:42,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 12:55:42,692 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:55:42,692 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1] [2022-12-14 12:55:42,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 12:55:42,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:55:42,893 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 12:55:42,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:42,895 INFO L85 PathProgramCache]: Analyzing trace with hash -924705598, now seen corresponding path program 2 times [2022-12-14 12:55:42,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:42,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607295488] [2022-12-14 12:55:42,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:42,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:43,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:55:43,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607295488] [2022-12-14 12:55:43,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607295488] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:55:43,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920318848] [2022-12-14 12:55:43,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:55:43,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:55:43,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:55:43,068 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:55:43,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 12:55:43,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 12:55:43,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:55:43,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:55:43,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:55:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:43,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:55:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:43,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920318848] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:55:43,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1503662146] [2022-12-14 12:55:43,207 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 12:55:43,208 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:55:43,208 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:55:43,208 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:55:43,208 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:55:43,252 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:55:43,397 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1151#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-12-14 12:55:43,398 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:55:43,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:55:43,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-14 12:55:43,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47267765] [2022-12-14 12:55:43,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:55:43,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 12:55:43,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:55:43,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 12:55:43,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2022-12-14 12:55:43,400 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 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) [2022-12-14 12:55:43,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:55:43,429 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2022-12-14 12:55:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 12:55:43,430 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 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) Word has length 33 [2022-12-14 12:55:43,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:55:43,430 INFO L225 Difference]: With dead ends: 78 [2022-12-14 12:55:43,431 INFO L226 Difference]: Without dead ends: 77 [2022-12-14 12:55:43,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2022-12-14 12:55:43,432 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:55:43,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 59 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:55:43,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-14 12:55:43,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-12-14 12:55:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2022-12-14 12:55:43,439 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 33 [2022-12-14 12:55:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:55:43,439 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2022-12-14 12:55:43,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 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) [2022-12-14 12:55:43,439 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2022-12-14 12:55:43,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 12:55:43,441 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:55:43,441 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1] [2022-12-14 12:55:43,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 12:55:43,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:55:43,642 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)] === [2022-12-14 12:55:43,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:43,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1320088787, now seen corresponding path program 3 times [2022-12-14 12:55:43,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:43,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541997034] [2022-12-14 12:55:43,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:43,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:43,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:55:43,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541997034] [2022-12-14 12:55:43,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541997034] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:55:43,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785875261] [2022-12-14 12:55:43,827 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:55:43,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:55:43,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:55:43,828 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:55:43,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 12:55:43,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:55:43,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:55:43,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 12:55:43,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:55:43,942 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:43,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:55:44,120 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:44,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785875261] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:55:44,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1724334728] [2022-12-14 12:55:44,121 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 12:55:44,121 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:55:44,122 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:55:44,122 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:55:44,122 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:55:44,169 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:55:44,320 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1797#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-12-14 12:55:44,321 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:55:44,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:55:44,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-12-14 12:55:44,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052466734] [2022-12-14 12:55:44,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:55:44,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 12:55:44,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:55:44,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 12:55:44,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=632, Unknown=0, NotChecked=0, Total=930 [2022-12-14 12:55:44,323 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 24 states, 23 states have (on average 6.434782608695652) internal successors, (148), 23 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:44,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:55:44,394 INFO L93 Difference]: Finished difference Result 172 states and 183 transitions. [2022-12-14 12:55:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 12:55:44,395 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.434782608695652) internal successors, (148), 23 states have internal predecessors, (148), 0 states have call successors, (0), 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 74 [2022-12-14 12:55:44,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:55:44,396 INFO L225 Difference]: With dead ends: 172 [2022-12-14 12:55:44,397 INFO L226 Difference]: Without dead ends: 171 [2022-12-14 12:55:44,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=298, Invalid=632, Unknown=0, NotChecked=0, Total=930 [2022-12-14 12:55:44,398 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 25 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:55:44,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 133 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:55:44,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-12-14 12:55:44,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 160. [2022-12-14 12:55:44,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 158 states have (on average 1.0822784810126582) internal successors, (171), 159 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) [2022-12-14 12:55:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2022-12-14 12:55:44,409 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 74 [2022-12-14 12:55:44,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:55:44,410 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2022-12-14 12:55:44,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.434782608695652) internal successors, (148), 23 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:44,410 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2022-12-14 12:55:44,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 12:55:44,411 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:55:44,411 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 1, 1] [2022-12-14 12:55:44,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 12:55:44,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 12:55:44,612 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 12:55:44,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:44,613 INFO L85 PathProgramCache]: Analyzing trace with hash 2026920610, now seen corresponding path program 3 times [2022-12-14 12:55:44,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:44,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584467640] [2022-12-14 12:55:44,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:44,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:44,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:55:44,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584467640] [2022-12-14 12:55:44,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584467640] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:55:44,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932795371] [2022-12-14 12:55:44,778 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:55:44,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:55:44,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:55:44,779 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:55:44,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 12:55:44,819 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:55:44,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:55:44,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 12:55:44,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:55:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:44,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:55:45,094 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:45,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932795371] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:55:45,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1499045076] [2022-12-14 12:55:45,096 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 12:55:45,096 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:55:45,097 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:55:45,097 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:55:45,097 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:55:45,140 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:55:45,309 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2650#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-12-14 12:55:45,309 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:55:45,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:55:45,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-12-14 12:55:45,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720957983] [2022-12-14 12:55:45,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:55:45,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 12:55:45,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:55:45,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 12:55:45,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=630, Unknown=0, NotChecked=0, Total=930 [2022-12-14 12:55:45,311 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand has 24 states, 23 states have (on average 6.521739130434782) internal successors, (150), 23 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:45,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:55:45,366 INFO L93 Difference]: Finished difference Result 162 states and 173 transitions. [2022-12-14 12:55:45,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 12:55:45,367 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.521739130434782) internal successors, (150), 23 states have internal predecessors, (150), 0 states have call successors, (0), 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 75 [2022-12-14 12:55:45,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:55:45,368 INFO L225 Difference]: With dead ends: 162 [2022-12-14 12:55:45,368 INFO L226 Difference]: Without dead ends: 161 [2022-12-14 12:55:45,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=630, Unknown=0, NotChecked=0, Total=930 [2022-12-14 12:55:45,369 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:55:45,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 122 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:55:45,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-12-14 12:55:45,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-12-14 12:55:45,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 160 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2022-12-14 12:55:45,384 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 75 [2022-12-14 12:55:45,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:55:45,384 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2022-12-14 12:55:45,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.521739130434782) internal successors, (150), 23 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:45,384 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2022-12-14 12:55:45,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-14 12:55:45,386 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:55:45,386 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1] [2022-12-14 12:55:45,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 12:55:45,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 12:55:45,588 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 12:55:45,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:45,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1637556077, now seen corresponding path program 4 times [2022-12-14 12:55:45,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:45,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776784034] [2022-12-14 12:55:45,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:45,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:46,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:46,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:55:46,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776784034] [2022-12-14 12:55:46,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776784034] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:55:46,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496924600] [2022-12-14 12:55:46,060 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 12:55:46,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:55:46,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:55:46,061 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:55:46,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 12:55:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:46,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 12:55:46,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:55:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:46,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:55:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:46,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496924600] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:55:46,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [32750675] [2022-12-14 12:55:46,767 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 12:55:46,767 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:55:46,767 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:55:46,767 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:55:46,767 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:55:46,803 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:55:46,995 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4016#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-12-14 12:55:46,995 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:55:46,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:55:46,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-12-14 12:55:46,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393201244] [2022-12-14 12:55:46,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:55:46,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 12:55:46,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:55:46,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 12:55:46,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1150, Invalid=1820, Unknown=0, NotChecked=0, Total=2970 [2022-12-14 12:55:46,999 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand has 48 states, 47 states have (on average 6.723404255319149) internal successors, (316), 47 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:47,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:55:47,104 INFO L93 Difference]: Finished difference Result 352 states and 375 transitions. [2022-12-14 12:55:47,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 12:55:47,104 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.723404255319149) internal successors, (316), 47 states have internal predecessors, (316), 0 states have call successors, (0), 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 158 [2022-12-14 12:55:47,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:55:47,105 INFO L225 Difference]: With dead ends: 352 [2022-12-14 12:55:47,105 INFO L226 Difference]: Without dead ends: 351 [2022-12-14 12:55:47,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1150, Invalid=1820, Unknown=0, NotChecked=0, Total=2970 [2022-12-14 12:55:47,106 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 66 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:55:47,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 265 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:55:47,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-12-14 12:55:47,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 328. [2022-12-14 12:55:47,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 326 states have (on average 1.0766871165644172) internal successors, (351), 327 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:47,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 351 transitions. [2022-12-14 12:55:47,122 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 351 transitions. Word has length 158 [2022-12-14 12:55:47,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:55:47,122 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 351 transitions. [2022-12-14 12:55:47,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.723404255319149) internal successors, (316), 47 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:47,122 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 351 transitions. [2022-12-14 12:55:47,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-14 12:55:47,124 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:55:47,125 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 1, 1] [2022-12-14 12:55:47,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 12:55:47,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:55:47,327 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 12:55:47,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:47,328 INFO L85 PathProgramCache]: Analyzing trace with hash -775369118, now seen corresponding path program 4 times [2022-12-14 12:55:47,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:47,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096918333] [2022-12-14 12:55:47,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:47,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:47,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:47,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:55:47,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096918333] [2022-12-14 12:55:47,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096918333] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:55:47,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954306738] [2022-12-14 12:55:47,760 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 12:55:47,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:55:47,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:55:47,761 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:55:47,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 12:55:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:47,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 12:55:47,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:55:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:47,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:55:48,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:48,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954306738] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:55:48,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [835605208] [2022-12-14 12:55:48,496 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 12:55:48,497 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:55:48,497 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:55:48,497 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:55:48,497 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:55:48,540 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:55:48,755 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5793#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-12-14 12:55:48,756 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:55:48,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:55:48,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-12-14 12:55:48,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842161436] [2022-12-14 12:55:48,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:55:48,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 12:55:48,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:55:48,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 12:55:48,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1152, Invalid=1818, Unknown=0, NotChecked=0, Total=2970 [2022-12-14 12:55:48,758 INFO L87 Difference]: Start difference. First operand 328 states and 351 transitions. Second operand has 48 states, 47 states have (on average 6.76595744680851) internal successors, (318), 47 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:48,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:55:48,878 INFO L93 Difference]: Finished difference Result 330 states and 353 transitions. [2022-12-14 12:55:48,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 12:55:48,878 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.76595744680851) internal successors, (318), 47 states have internal predecessors, (318), 0 states have call successors, (0), 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 159 [2022-12-14 12:55:48,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:55:48,879 INFO L225 Difference]: With dead ends: 330 [2022-12-14 12:55:48,879 INFO L226 Difference]: Without dead ends: 329 [2022-12-14 12:55:48,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1152, Invalid=1818, Unknown=0, NotChecked=0, Total=2970 [2022-12-14 12:55:48,880 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:55:48,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 240 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:55:48,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-12-14 12:55:48,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-12-14 12:55:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 327 states have (on average 1.0061162079510704) internal successors, (329), 328 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:48,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2022-12-14 12:55:48,889 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 159 [2022-12-14 12:55:48,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:55:48,889 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2022-12-14 12:55:48,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.76595744680851) internal successors, (318), 47 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2022-12-14 12:55:48,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-12-14 12:55:48,895 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:55:48,895 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1] [2022-12-14 12:55:48,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 12:55:49,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 12:55:49,096 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 12:55:49,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:49,097 INFO L85 PathProgramCache]: Analyzing trace with hash 79390701, now seen corresponding path program 5 times [2022-12-14 12:55:49,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:49,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10014558] [2022-12-14 12:55:49,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:49,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:50,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:50,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:55:50,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10014558] [2022-12-14 12:55:50,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10014558] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:55:50,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766682291] [2022-12-14 12:55:50,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:55:50,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:55:50,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:55:50,444 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:55:50,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 12:55:50,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-12-14 12:55:50,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:55:50,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 12:55:50,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:55:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:50,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:55:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:52,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766682291] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:55:52,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1621353566] [2022-12-14 12:55:52,770 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 12:55:52,770 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:55:52,770 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:55:52,770 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:55:52,770 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:55:52,801 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:55:53,022 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8599#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-12-14 12:55:53,023 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:55:53,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:55:53,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-12-14 12:55:53,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140606404] [2022-12-14 12:55:53,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:55:53,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-14 12:55:53,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:55:53,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-14 12:55:53,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4582, Invalid=5924, Unknown=0, NotChecked=0, Total=10506 [2022-12-14 12:55:53,026 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand has 96 states, 95 states have (on average 6.863157894736842) internal successors, (652), 95 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:53,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:55:53,318 INFO L93 Difference]: Finished difference Result 712 states and 759 transitions. [2022-12-14 12:55:53,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-14 12:55:53,318 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.863157894736842) internal successors, (652), 95 states have internal predecessors, (652), 0 states have call successors, (0), 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 326 [2022-12-14 12:55:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:55:53,320 INFO L225 Difference]: With dead ends: 712 [2022-12-14 12:55:53,320 INFO L226 Difference]: Without dead ends: 711 [2022-12-14 12:55:53,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1023 GetRequests, 922 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4582, Invalid=5924, Unknown=0, NotChecked=0, Total=10506 [2022-12-14 12:55:53,322 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 200 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:55:53,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 526 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:55:53,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-12-14 12:55:53,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 664. [2022-12-14 12:55:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 662 states have (on average 1.0740181268882176) internal successors, (711), 663 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:53,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 711 transitions. [2022-12-14 12:55:53,332 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 711 transitions. Word has length 326 [2022-12-14 12:55:53,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:55:53,333 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 711 transitions. [2022-12-14 12:55:53,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.863157894736842) internal successors, (652), 95 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 711 transitions. [2022-12-14 12:55:53,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-12-14 12:55:53,336 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:55:53,336 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 1, 1] [2022-12-14 12:55:53,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-14 12:55:53,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 12:55:53,538 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 12:55:53,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:53,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1833855518, now seen corresponding path program 5 times [2022-12-14 12:55:53,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:53,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435655789] [2022-12-14 12:55:53,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:53,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:55:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:54,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:55:54,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435655789] [2022-12-14 12:55:54,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435655789] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:55:54,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215713316] [2022-12-14 12:55:54,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:55:54,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:55:54,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:55:54,892 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:55:54,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 12:55:54,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-12-14 12:55:54,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:55:54,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 12:55:54,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:55:55,288 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:55,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:55:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:55:57,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215713316] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:55:57,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1941369326] [2022-12-14 12:55:57,269 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 12:55:57,269 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:55:57,270 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:55:57,270 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:55:57,270 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:55:57,303 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:55:57,562 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12224#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-12-14 12:55:57,563 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:55:57,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:55:57,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-12-14 12:55:57,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64768873] [2022-12-14 12:55:57,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:55:57,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-14 12:55:57,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:55:57,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-14 12:55:57,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4584, Invalid=5922, Unknown=0, NotChecked=0, Total=10506 [2022-12-14 12:55:57,569 INFO L87 Difference]: Start difference. First operand 664 states and 711 transitions. Second operand has 96 states, 95 states have (on average 6.88421052631579) internal successors, (654), 95 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:57,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:55:57,886 INFO L93 Difference]: Finished difference Result 666 states and 713 transitions. [2022-12-14 12:55:57,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-14 12:55:57,887 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.88421052631579) internal successors, (654), 95 states have internal predecessors, (654), 0 states have call successors, (0), 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 327 [2022-12-14 12:55:57,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:55:57,889 INFO L225 Difference]: With dead ends: 666 [2022-12-14 12:55:57,889 INFO L226 Difference]: Without dead ends: 665 [2022-12-14 12:55:57,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1026 GetRequests, 925 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4584, Invalid=5922, Unknown=0, NotChecked=0, Total=10506 [2022-12-14 12:55:57,892 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:55:57,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 480 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:55:57,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-12-14 12:55:57,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2022-12-14 12:55:57,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 663 states have (on average 1.0030165912518854) internal successors, (665), 664 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:57,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 665 transitions. [2022-12-14 12:55:57,914 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 665 transitions. Word has length 327 [2022-12-14 12:55:57,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:55:57,914 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 665 transitions. [2022-12-14 12:55:57,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.88421052631579) internal successors, (654), 95 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:55:57,915 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 665 transitions. [2022-12-14 12:55:57,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2022-12-14 12:55:57,919 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:55:57,920 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 94, 94, 1, 1] [2022-12-14 12:55:57,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-14 12:55:58,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 12:55:58,122 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)] === [2022-12-14 12:55:58,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:55:58,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1528006419, now seen corresponding path program 6 times [2022-12-14 12:55:58,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:55:58,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413656024] [2022-12-14 12:55:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:55:58,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:55:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:56:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 30879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:56:03,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:56:03,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413656024] [2022-12-14 12:56:03,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413656024] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:56:03,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256982715] [2022-12-14 12:56:03,292 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:56:03,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:56:03,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:56:03,293 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:56:03,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 12:56:03,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:56:03,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:56:03,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1233 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-14 12:56:03,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:56:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 30879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:56:03,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:56:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 30879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:56:10,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256982715] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:56:10,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2118606239] [2022-12-14 12:56:10,907 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 12:56:10,907 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:56:10,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:56:10,908 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:56:10,908 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:56:10,936 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:56:11,366 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17910#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-12-14 12:56:11,367 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:56:11,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:56:11,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-12-14 12:56:11,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087940096] [2022-12-14 12:56:11,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:56:11,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-12-14 12:56:11,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:56:11,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-12-14 12:56:11,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18358, Invalid=21044, Unknown=0, NotChecked=0, Total=39402 [2022-12-14 12:56:11,375 INFO L87 Difference]: Start difference. First operand 665 states and 665 transitions. Second operand has 192 states, 191 states have (on average 6.9319371727748695) internal successors, (1324), 191 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:56:13,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:56:13,188 INFO L93 Difference]: Finished difference Result 1432 states and 1527 transitions. [2022-12-14 12:56:13,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-12-14 12:56:13,188 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.9319371727748695) internal successors, (1324), 191 states have internal predecessors, (1324), 0 states have call successors, (0), 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 662 [2022-12-14 12:56:13,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:56:13,191 INFO L225 Difference]: With dead ends: 1432 [2022-12-14 12:56:13,191 INFO L226 Difference]: Without dead ends: 1431 [2022-12-14 12:56:13,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2079 GetRequests, 1882 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=18358, Invalid=21044, Unknown=0, NotChecked=0, Total=39402 [2022-12-14 12:56:13,194 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 366 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 12:56:13,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1057 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 12:56:13,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2022-12-14 12:56:13,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1336. [2022-12-14 12:56:13,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1334 states have (on average 1.0727136431784108) internal successors, (1431), 1335 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:56:13,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1431 transitions. [2022-12-14 12:56:13,214 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1431 transitions. Word has length 662 [2022-12-14 12:56:13,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:56:13,214 INFO L495 AbstractCegarLoop]: Abstraction has 1336 states and 1431 transitions. [2022-12-14 12:56:13,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.9319371727748695) internal successors, (1324), 191 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:56:13,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1431 transitions. [2022-12-14 12:56:13,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2022-12-14 12:56:13,217 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:56:13,217 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 94, 94, 94, 1, 1] [2022-12-14 12:56:13,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 12:56:13,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 12:56:13,418 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 12:56:13,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:56:13,420 INFO L85 PathProgramCache]: Analyzing trace with hash -123558686, now seen corresponding path program 6 times [2022-12-14 12:56:13,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:56:13,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529919330] [2022-12-14 12:56:13,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:56:13,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:56:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:56:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 30973 backedges. 0 proven. 30973 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:56:19,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:56:19,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529919330] [2022-12-14 12:56:19,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529919330] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:56:19,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31078092] [2022-12-14 12:56:19,090 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:56:19,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:56:19,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:56:19,091 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:56:19,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 12:56:19,233 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:56:19,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:56:19,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-14 12:56:19,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:56:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 30973 backedges. 0 proven. 30973 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:56:19,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:56:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 30973 backedges. 0 proven. 30973 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:56:26,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31078092] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:56:26,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1409161350] [2022-12-14 12:56:26,526 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 12:56:26,526 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:56:26,526 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:56:26,526 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:56:26,526 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:56:26,558 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:56:27,021 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25231#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-12-14 12:56:27,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:56:27,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:56:27,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-12-14 12:56:27,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030350684] [2022-12-14 12:56:27,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:56:27,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-12-14 12:56:27,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:56:27,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-12-14 12:56:27,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18360, Invalid=21042, Unknown=0, NotChecked=0, Total=39402 [2022-12-14 12:56:27,028 INFO L87 Difference]: Start difference. First operand 1336 states and 1431 transitions. Second operand has 192 states, 191 states have (on average 6.942408376963351) internal successors, (1326), 191 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:56:28,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:56:28,559 INFO L93 Difference]: Finished difference Result 1338 states and 1433 transitions. [2022-12-14 12:56:28,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-12-14 12:56:28,561 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.942408376963351) internal successors, (1326), 191 states have internal predecessors, (1326), 0 states have call successors, (0), 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 663 [2022-12-14 12:56:28,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:56:28,564 INFO L225 Difference]: With dead ends: 1338 [2022-12-14 12:56:28,564 INFO L226 Difference]: Without dead ends: 1337 [2022-12-14 12:56:28,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2082 GetRequests, 1885 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1990 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=18360, Invalid=21042, Unknown=0, NotChecked=0, Total=39402 [2022-12-14 12:56:28,566 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 12:56:28,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 961 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 12:56:28,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2022-12-14 12:56:28,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1337. [2022-12-14 12:56:28,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1335 states have (on average 1.0014981273408239) internal successors, (1337), 1336 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:56:28,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1337 transitions. [2022-12-14 12:56:28,588 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1337 transitions. Word has length 663 [2022-12-14 12:56:28,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:56:28,588 INFO L495 AbstractCegarLoop]: Abstraction has 1337 states and 1337 transitions. [2022-12-14 12:56:28,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.942408376963351) internal successors, (1326), 191 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:56:28,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1337 transitions. [2022-12-14 12:56:28,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1335 [2022-12-14 12:56:28,597 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:56:28,597 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 190, 190, 190, 190, 190, 1, 1] [2022-12-14 12:56:28,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 12:56:28,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 12:56:28,799 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 12:56:28,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:56:28,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1961846035, now seen corresponding path program 7 times [2022-12-14 12:56:28,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:56:28,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398340484] [2022-12-14 12:56:28,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:56:28,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:56:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:56:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 126255 backedges. 0 proven. 126255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:56:56,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:56:56,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398340484] [2022-12-14 12:56:56,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398340484] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:56:56,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523305390] [2022-12-14 12:56:56,574 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 12:56:56,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:56:56,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:56:56,575 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:56:56,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 12:56:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:56:56,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 192 conjunts are in the unsatisfiable core [2022-12-14 12:56:56,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:56:57,678 INFO L134 CoverageAnalysis]: Checked inductivity of 126255 backedges. 0 proven. 126255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:56:57,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:57:23,996 INFO L134 CoverageAnalysis]: Checked inductivity of 126255 backedges. 0 proven. 126255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:57:23,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523305390] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:57:23,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1129590083] [2022-12-14 12:57:23,997 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 12:57:23,997 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:57:23,998 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:57:23,998 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:57:23,998 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:57:24,038 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:57:24,758 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '36677#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-12-14 12:57:24,758 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:57:24,759 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:57:24,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-12-14 12:57:24,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828167293] [2022-12-14 12:57:24,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:57:24,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-12-14 12:57:24,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:57:24,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-12-14 12:57:24,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73558, Invalid=78932, Unknown=0, NotChecked=0, Total=152490 [2022-12-14 12:57:24,777 INFO L87 Difference]: Start difference. First operand 1337 states and 1337 transitions. Second operand has 384 states, 383 states have (on average 6.966057441253263) internal successors, (2668), 383 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:57:36,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:57:36,856 INFO L93 Difference]: Finished difference Result 2872 states and 3063 transitions. [2022-12-14 12:57:36,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-12-14 12:57:36,857 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 6.966057441253263) internal successors, (2668), 383 states have internal predecessors, (2668), 0 states have call successors, (0), 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 1334 [2022-12-14 12:57:36,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:57:36,861 INFO L225 Difference]: With dead ends: 2872 [2022-12-14 12:57:36,861 INFO L226 Difference]: Without dead ends: 2871 [2022-12-14 12:57:36,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4191 GetRequests, 3802 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 33.9s TimeCoverageRelationStatistics Valid=73558, Invalid=78932, Unknown=0, NotChecked=0, Total=152490 [2022-12-14 12:57:36,868 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1024 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:57:36,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 2111 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 12:57:36,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2022-12-14 12:57:36,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2680. [2022-12-14 12:57:36,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2678 states have (on average 1.072068707991038) internal successors, (2871), 2679 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:57:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 2871 transitions. [2022-12-14 12:57:36,905 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 2871 transitions. Word has length 1334 [2022-12-14 12:57:36,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:57:36,906 INFO L495 AbstractCegarLoop]: Abstraction has 2680 states and 2871 transitions. [2022-12-14 12:57:36,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 6.966057441253263) internal successors, (2668), 383 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:57:36,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 2871 transitions. [2022-12-14 12:57:36,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1336 [2022-12-14 12:57:36,915 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:57:36,915 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 190, 190, 190, 190, 1, 1] [2022-12-14 12:57:36,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-14 12:57:37,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:57:37,115 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 12:57:37,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:57:37,116 INFO L85 PathProgramCache]: Analyzing trace with hash -687684894, now seen corresponding path program 7 times [2022-12-14 12:57:37,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:57:37,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480283605] [2022-12-14 12:57:37,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:57:37,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:57:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:58:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 126445 backedges. 0 proven. 126445 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:58:07,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:58:07,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480283605] [2022-12-14 12:58:07,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480283605] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:58:07,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238843754] [2022-12-14 12:58:07,034 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 12:58:07,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:58:07,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:58:07,035 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:58:07,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 12:58:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:58:07,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 192 conjunts are in the unsatisfiable core [2022-12-14 12:58:07,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:58:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 126445 backedges. 0 proven. 126445 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:58:08,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:58:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 126445 backedges. 0 proven. 126445 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:58:35,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238843754] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:58:35,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [571443274] [2022-12-14 12:58:35,462 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 12:58:35,462 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:58:35,462 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:58:35,462 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:58:35,463 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:58:35,490 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:58:36,317 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '51390#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-12-14 12:58:36,317 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:58:36,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:58:36,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-12-14 12:58:36,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415480437] [2022-12-14 12:58:36,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:58:36,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-12-14 12:58:36,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:58:36,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-12-14 12:58:36,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73560, Invalid=78930, Unknown=0, NotChecked=0, Total=152490 [2022-12-14 12:58:36,336 INFO L87 Difference]: Start difference. First operand 2680 states and 2871 transitions. Second operand has 384 states, 383 states have (on average 6.971279373368146) internal successors, (2670), 383 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:58:45,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:58:45,570 INFO L93 Difference]: Finished difference Result 2682 states and 2873 transitions. [2022-12-14 12:58:45,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-12-14 12:58:45,571 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 6.971279373368146) internal successors, (2670), 383 states have internal predecessors, (2670), 0 states have call successors, (0), 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 1335 [2022-12-14 12:58:45,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:58:45,575 INFO L225 Difference]: With dead ends: 2682 [2022-12-14 12:58:45,575 INFO L226 Difference]: Without dead ends: 2681 [2022-12-14 12:58:45,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4194 GetRequests, 3805 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4006 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=73560, Invalid=78930, Unknown=0, NotChecked=0, Total=152490 [2022-12-14 12:58:45,582 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 12:58:45,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1921 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 12:58:45,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-12-14 12:58:45,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2681. [2022-12-14 12:58:45,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2681 states, 2679 states have (on average 1.0007465472191117) internal successors, (2681), 2680 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:58:45,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2681 states to 2681 states and 2681 transitions. [2022-12-14 12:58:45,622 INFO L78 Accepts]: Start accepts. Automaton has 2681 states and 2681 transitions. Word has length 1335 [2022-12-14 12:58:45,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:58:45,622 INFO L495 AbstractCegarLoop]: Abstraction has 2681 states and 2681 transitions. [2022-12-14 12:58:45,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 6.971279373368146) internal successors, (2670), 383 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:58:45,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2681 states and 2681 transitions. [2022-12-14 12:58:45,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2679 [2022-12-14 12:58:45,653 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:58:45,653 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 382, 382, 382, 382, 382, 1, 1] [2022-12-14 12:58:45,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 12:58:45,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:58:45,854 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 12:58:45,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:58:45,854 INFO L85 PathProgramCache]: Analyzing trace with hash -564076819, now seen corresponding path program 8 times [2022-12-14 12:58:45,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:58:45,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089898631] [2022-12-14 12:58:45,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:58:45,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:58:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:01:48,188 INFO L134 CoverageAnalysis]: Checked inductivity of 510543 backedges. 0 proven. 510543 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:01:48,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:01:48,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089898631] [2022-12-14 13:01:48,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089898631] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:01:48,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450873320] [2022-12-14 13:01:48,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:01:48,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:01:48,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:01:48,190 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:01:48,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 13:01:52,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-12-14 13:01:52,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:01:52,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 4977 conjuncts, 384 conjunts are in the unsatisfiable core [2022-12-14 13:01:52,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:01:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 510543 backedges. 0 proven. 510543 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:01:54,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:03:42,948 INFO L134 CoverageAnalysis]: Checked inductivity of 510543 backedges. 0 proven. 510543 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:03:42,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450873320] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:03:42,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [661428502] [2022-12-14 13:03:42,950 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 13:03:42,950 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:03:42,950 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:03:42,950 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:03:42,950 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:03:42,979 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:03:44,094 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '74356#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-12-14 13:03:44,094 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:03:44,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:03:44,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 766 [2022-12-14 13:03:44,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467896584] [2022-12-14 13:03:44,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:03:44,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2022-12-14 13:03:44,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:03:44,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2022-12-14 13:03:44,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294550, Invalid=305300, Unknown=0, NotChecked=0, Total=599850 [2022-12-14 13:03:44,159 INFO L87 Difference]: Start difference. First operand 2681 states and 2681 transitions. Second operand has 768 states, 767 states have (on average 6.983050847457627) internal successors, (5356), 767 states have internal predecessors, (5356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:05:50,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:05:50,892 INFO L93 Difference]: Finished difference Result 5752 states and 6135 transitions. [2022-12-14 13:05:50,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2022-12-14 13:05:50,895 INFO L78 Accepts]: Start accepts. Automaton has has 768 states, 767 states have (on average 6.983050847457627) internal successors, (5356), 767 states have internal predecessors, (5356), 0 states have call successors, (0), 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 2678 [2022-12-14 13:05:50,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:05:50,904 INFO L225 Difference]: With dead ends: 5752 [2022-12-14 13:05:50,904 INFO L226 Difference]: Without dead ends: 5751 [2022-12-14 13:05:50,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8415 GetRequests, 7642 SyntacticMatches, 0 SemanticMatches, 773 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8036 ImplicationChecksByTransitivity, 140.8s TimeCoverageRelationStatistics Valid=294550, Invalid=305300, Unknown=0, NotChecked=0, Total=599850 [2022-12-14 13:05:50,930 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2423 mSDsluCounter, 4220 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 4227 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:05:50,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2423 Valid, 4227 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-14 13:05:50,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5751 states. [2022-12-14 13:05:51,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5751 to 5368. [2022-12-14 13:05:51,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5366 states have (on average 1.0717480432351845) internal successors, (5751), 5367 states have internal predecessors, (5751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:05:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 5751 transitions. [2022-12-14 13:05:51,023 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 5751 transitions. Word has length 2678 [2022-12-14 13:05:51,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:05:51,024 INFO L495 AbstractCegarLoop]: Abstraction has 5368 states and 5751 transitions. [2022-12-14 13:05:51,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 768 states, 767 states have (on average 6.983050847457627) internal successors, (5356), 767 states have internal predecessors, (5356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:05:51,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 5751 transitions. [2022-12-14 13:05:51,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2680 [2022-12-14 13:05:51,075 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:05:51,075 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 383, 382, 382, 382, 382, 1, 1] [2022-12-14 13:05:51,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 13:05:51,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-14 13:05:51,276 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:05:51,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:05:51,277 INFO L85 PathProgramCache]: Analyzing trace with hash -306512158, now seen corresponding path program 8 times [2022-12-14 13:05:51,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:05:51,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178629839] [2022-12-14 13:05:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:05:51,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:05:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:08:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 510925 backedges. 0 proven. 510925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:08:55,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:08:55,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178629839] [2022-12-14 13:08:55,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178629839] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:08:55,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166851854] [2022-12-14 13:08:55,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:08:55,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:08:55,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:08:55,367 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:08:55,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb0af9b-8c94-4b86-bd6b-7c0418d31b8e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 13:08:59,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-12-14 13:08:59,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:08:59,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 4980 conjuncts, 384 conjunts are in the unsatisfiable core [2022-12-14 13:08:59,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:09:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 510925 backedges. 0 proven. 510925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:09:02,155 INFO L328 TraceCheckSpWp]: Computing backward predicates...