./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-examples/standard_compareModified_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_compareModified_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ec4d4b5cea975144b4de3d9f9eb9b04d1c4b7aa6b7464f360f53530c4a9bd50e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:55:48,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:55:48,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:55:48,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:55:48,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:55:48,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:55:48,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:55:48,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:55:48,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:55:48,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:55:48,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:55:48,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:55:48,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:55:48,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:55:48,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:55:48,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:55:48,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:55:48,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:55:48,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:55:48,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:55:48,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:55:48,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:55:48,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:55:48,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:55:48,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:55:48,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:55:48,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:55:48,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:55:48,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:55:48,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:55:48,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:55:48,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:55:48,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:55:48,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:55:48,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:55:48,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:55:48,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:55:48,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:55:48,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:55:48,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:55:48,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:55:48,582 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 14:55:48,605 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:55:48,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:55:48,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:55:48,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:55:48,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:55:48,607 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:55:48,608 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:55:48,608 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:55:48,608 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:55:48,609 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:55:48,609 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:55:48,609 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:55:48,609 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:55:48,609 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:55:48,610 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:55:48,610 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:55:48,610 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:55:48,610 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:55:48,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:55:48,611 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:55:48,611 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:55:48,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:55:48,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:55:48,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:55:48,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:55:48,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:55:48,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:55:48,613 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 14:55:48,613 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:55:48,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:55:48,613 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:55:48,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:55:48,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:55:48,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:55:48,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:55:48,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:55:48,615 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:55:48,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:55:48,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:55:48,615 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:55:48,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:55:48,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:55:48,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:55:48,616 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_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec4d4b5cea975144b4de3d9f9eb9b04d1c4b7aa6b7464f360f53530c4a9bd50e [2022-11-23 14:55:48,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:55:48,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:55:48,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:55:48,947 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:55:48,947 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:55:48,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/array-examples/standard_compareModified_ground.i [2022-11-23 14:55:52,163 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:55:52,401 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:55:52,402 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/sv-benchmarks/c/array-examples/standard_compareModified_ground.i [2022-11-23 14:55:52,411 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/data/79fa16b25/2e96a1a8bcef45828bf5c472e42370ee/FLAG098c49a61 [2022-11-23 14:55:52,438 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/data/79fa16b25/2e96a1a8bcef45828bf5c472e42370ee [2022-11-23 14:55:52,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:55:52,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:55:52,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:55:52,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:55:52,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:55:52,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:55:52" (1/1) ... [2022-11-23 14:55:52,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d00f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:52, skipping insertion in model container [2022-11-23 14:55:52,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:55:52" (1/1) ... [2022-11-23 14:55:52,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:55:52,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:55:52,745 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/sv-benchmarks/c/array-examples/standard_compareModified_ground.i[824,837] [2022-11-23 14:55:52,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:55:52,791 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:55:52,807 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/sv-benchmarks/c/array-examples/standard_compareModified_ground.i[824,837] [2022-11-23 14:55:52,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:55:52,841 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:55:52,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:52 WrapperNode [2022-11-23 14:55:52,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:55:52,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:55:52,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:55:52,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:55:52,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:52" (1/1) ... [2022-11-23 14:55:52,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:52" (1/1) ... [2022-11-23 14:55:52,905 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 94 [2022-11-23 14:55:52,905 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:55:52,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:55:52,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:55:52,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:55:52,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:52" (1/1) ... [2022-11-23 14:55:52,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:52" (1/1) ... [2022-11-23 14:55:52,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:52" (1/1) ... [2022-11-23 14:55:52,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:52" (1/1) ... [2022-11-23 14:55:52,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:52" (1/1) ... [2022-11-23 14:55:52,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:52" (1/1) ... [2022-11-23 14:55:52,935 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:52" (1/1) ... [2022-11-23 14:55:52,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:52" (1/1) ... [2022-11-23 14:55:52,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:55:52,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:55:52,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:55:52,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:55:52,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:52" (1/1) ... [2022-11-23 14:55:52,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:55:52,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:55:52,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:55:52,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:55:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:55:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:55:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:55:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:55:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:55:53,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:55:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:55:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 14:55:53,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 14:55:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:55:53,112 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:55:53,114 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:55:53,425 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:55:53,530 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:55:53,530 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 14:55:53,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:55:53 BoogieIcfgContainer [2022-11-23 14:55:53,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:55:53,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:55:53,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:55:53,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:55:53,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:55:52" (1/3) ... [2022-11-23 14:55:53,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7217098e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:55:53, skipping insertion in model container [2022-11-23 14:55:53,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:52" (2/3) ... [2022-11-23 14:55:53,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7217098e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:55:53, skipping insertion in model container [2022-11-23 14:55:53,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:55:53" (3/3) ... [2022-11-23 14:55:53,567 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_compareModified_ground.i [2022-11-23 14:55:53,595 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:55:53,596 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-23 14:55:53,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:55:53,689 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;@21b3e726, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:55:53,690 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-23 14:55:53,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:55:53,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 14:55:53,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:55:53,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 14:55:53,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-23 14:55:53,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:55:53,719 INFO L85 PathProgramCache]: Analyzing trace with hash 138831, now seen corresponding path program 1 times [2022-11-23 14:55:53,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:55:53,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7518318] [2022-11-23 14:55:53,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:53,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:55:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:55:54,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:55:54,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7518318] [2022-11-23 14:55:54,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7518318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:55:54,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:55:54,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:55:54,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290120320] [2022-11-23 14:55:54,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:55:54,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:55:54,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:55:54,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:55:54,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:55:54,142 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:55:54,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:55:54,269 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2022-11-23 14:55:54,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:55:54,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-23 14:55:54,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:55:54,278 INFO L225 Difference]: With dead ends: 59 [2022-11-23 14:55:54,278 INFO L226 Difference]: Without dead ends: 32 [2022-11-23 14:55:54,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:55:54,284 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:55:54,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 68 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:55:54,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-23 14:55:54,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-23 14:55:54,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 28 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:55:54,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-11-23 14:55:54,322 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 3 [2022-11-23 14:55:54,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:55:54,323 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-11-23 14:55:54,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:55:54,323 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-11-23 14:55:54,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:55:54,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:55:54,324 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-23 14:55:54,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:55:54,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-23 14:55:54,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:55:54,325 INFO L85 PathProgramCache]: Analyzing trace with hash -159004478, now seen corresponding path program 1 times [2022-11-23 14:55:54,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:55:54,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073459047] [2022-11-23 14:55:54,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:54,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:55:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:55:54,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:55:54,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073459047] [2022-11-23 14:55:54,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073459047] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:55:54,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115771054] [2022-11-23 14:55:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:54,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:55:54,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:55:54,507 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:55:54,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:55:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:54,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:55:54,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:55:54,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:55:54,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:55:54,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115771054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:55:54,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:55:54,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2022-11-23 14:55:54,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505613569] [2022-11-23 14:55:54,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:55:54,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:55:54,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:55:54,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:55:54,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:55:54,669 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:55:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:55:54,729 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-11-23 14:55:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:55:54,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 14:55:54,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:55:54,731 INFO L225 Difference]: With dead ends: 32 [2022-11-23 14:55:54,731 INFO L226 Difference]: Without dead ends: 31 [2022-11-23 14:55:54,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:55:54,733 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 28 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:55:54,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 65 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:55:54,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-23 14:55:54,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-23 14:55:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 27 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:55:54,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-11-23 14:55:54,741 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 6 [2022-11-23 14:55:54,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:55:54,741 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-11-23 14:55:54,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:55:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-11-23 14:55:54,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 14:55:54,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:55:54,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:55:54,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 14:55:54,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-23 14:55:54,948 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-23 14:55:54,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:55:54,948 INFO L85 PathProgramCache]: Analyzing trace with hash -634162435, now seen corresponding path program 1 times [2022-11-23 14:55:54,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:55:54,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178927923] [2022-11-23 14:55:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:54,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:55:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:55:55,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:55:55,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178927923] [2022-11-23 14:55:55,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178927923] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:55:55,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372793093] [2022-11-23 14:55:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:55,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:55:55,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:55:55,141 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:55:55,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:55:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:55,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:55:55,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:55:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:55:55,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:55:55,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372793093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:55:55,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:55:55,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-23 14:55:55,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461285284] [2022-11-23 14:55:55,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:55:55,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:55:55,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:55:55,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:55:55,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:55:55,276 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:55:55,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:55:55,317 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-11-23 14:55:55,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:55:55,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 14:55:55,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:55:55,321 INFO L225 Difference]: With dead ends: 31 [2022-11-23 14:55:55,322 INFO L226 Difference]: Without dead ends: 30 [2022-11-23 14:55:55,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:55:55,327 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:55:55,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 22 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:55:55,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-23 14:55:55,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-23 14:55:55,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:55:55,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2022-11-23 14:55:55,345 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 7 [2022-11-23 14:55:55,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:55:55,345 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2022-11-23 14:55:55,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:55:55,346 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-11-23 14:55:55,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 14:55:55,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:55:55,346 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2022-11-23 14:55:55,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:55:55,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:55:55,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-23 14:55:55,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:55:55,555 INFO L85 PathProgramCache]: Analyzing trace with hash -634171476, now seen corresponding path program 1 times [2022-11-23 14:55:55,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:55:55,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218671743] [2022-11-23 14:55:55,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:55,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:55:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:55,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:55:55,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:55:55,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218671743] [2022-11-23 14:55:55,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218671743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:55:55,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:55:55,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:55:55,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630206267] [2022-11-23 14:55:55,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:55:55,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:55:55,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:55:55,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:55:55,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:55:55,657 INFO L87 Difference]: Start difference. First operand 30 states and 35 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) [2022-11-23 14:55:55,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:55:55,709 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-11-23 14:55:55,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:55:55,709 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 [2022-11-23 14:55:55,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:55:55,711 INFO L225 Difference]: With dead ends: 30 [2022-11-23 14:55:55,711 INFO L226 Difference]: Without dead ends: 29 [2022-11-23 14:55:55,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:55:55,717 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:55:55,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:55:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-23 14:55:55,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-11-23 14:55:55,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 23 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:55:55,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-11-23 14:55:55,742 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 7 [2022-11-23 14:55:55,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:55:55,742 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-11-23 14:55:55,742 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) [2022-11-23 14:55:55,743 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-11-23 14:55:55,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:55:55,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:55:55,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:55:55,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:55:55,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-23 14:55:55,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:55:55,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1815801063, now seen corresponding path program 1 times [2022-11-23 14:55:55,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:55:55,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094030177] [2022-11-23 14:55:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:55,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:55:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:55:55,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:55:55,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094030177] [2022-11-23 14:55:55,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094030177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:55:55,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614661646] [2022-11-23 14:55:55,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:55,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:55:55,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:55:55,860 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:55:55,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:55:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:55,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:55:55,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:55:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:55:55,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:55:55,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614661646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:55:55,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:55:55,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-23 14:55:55,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350851013] [2022-11-23 14:55:55,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:55:55,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:55:55,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:55:55,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:55:55,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:55:55,970 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:55:56,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:55:56,011 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2022-11-23 14:55:56,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:55:56,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 14:55:56,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:55:56,015 INFO L225 Difference]: With dead ends: 49 [2022-11-23 14:55:56,015 INFO L226 Difference]: Without dead ends: 30 [2022-11-23 14:55:56,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:55:56,017 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:55:56,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:55:56,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-23 14:55:56,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-23 14:55:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:55:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2022-11-23 14:55:56,030 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 8 [2022-11-23 14:55:56,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:55:56,031 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2022-11-23 14:55:56,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:55:56,031 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-11-23 14:55:56,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:55:56,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:55:56,032 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:55:56,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:55:56,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:55:56,238 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-23 14:55:56,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:55:56,238 INFO L85 PathProgramCache]: Analyzing trace with hash -583479984, now seen corresponding path program 1 times [2022-11-23 14:55:56,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:55:56,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177216120] [2022-11-23 14:55:56,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:56,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:55:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 14:55:56,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:55:56,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177216120] [2022-11-23 14:55:56,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177216120] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:55:56,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695114636] [2022-11-23 14:55:56,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:56,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:55:56,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:55:56,320 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:55:56,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:55:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:56,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:55:56,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:55:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:55:56,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:55:56,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695114636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:55:56,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:55:56,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2022-11-23 14:55:56,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754753661] [2022-11-23 14:55:56,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:55:56,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:55:56,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:55:56,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:55:56,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:55:56,428 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:55:56,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:55:56,464 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-11-23 14:55:56,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:55:56,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-23 14:55:56,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:55:56,466 INFO L225 Difference]: With dead ends: 30 [2022-11-23 14:55:56,466 INFO L226 Difference]: Without dead ends: 29 [2022-11-23 14:55:56,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:55:56,471 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:55:56,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 36 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:55:56,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-23 14:55:56,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-11-23 14:55:56,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.4) internal successors, (28), 23 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:55:56,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-11-23 14:55:56,485 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 11 [2022-11-23 14:55:56,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:55:56,485 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-11-23 14:55:56,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:55:56,486 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-11-23 14:55:56,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 14:55:56,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:55:56,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:55:56,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:55:56,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:55:56,702 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-23 14:55:56,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:55:56,703 INFO L85 PathProgramCache]: Analyzing trace with hash -983799699, now seen corresponding path program 1 times [2022-11-23 14:55:56,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:55:56,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169632279] [2022-11-23 14:55:56,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:56,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:55:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:55:56,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:55:56,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169632279] [2022-11-23 14:55:56,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169632279] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:55:56,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106554171] [2022-11-23 14:55:56,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:56,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:55:56,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:55:56,777 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:55:56,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:55:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:56,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:55:56,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:55:56,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:55:56,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:55:56,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:55:56,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106554171] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:55:56,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [543632563] [2022-11-23 14:55:56,951 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-23 14:55:56,952 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:55:56,955 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:55:56,961 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:55:56,962 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:55:57,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:57,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:57,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:57,205 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-23 14:55:57,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-23 14:55:57,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:57,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:57,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:57,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-23 14:55:57,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:57,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:57,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-23 14:55:57,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:57,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:57,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:57,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:57,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-23 14:55:58,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:58,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:58,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:58,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:58,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:58,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:58,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:58,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:58,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:58,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:58,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:55:58,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:55:58,051 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:55:58,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:55:58,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:55:58,089 INFO L321 Elim1Store]: treesize reduction 141, result has 7.2 percent of original size [2022-11-23 14:55:58,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 441 treesize of output 392 [2022-11-23 14:55:58,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:55:58,263 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-23 14:55:58,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-23 14:55:58,365 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:55:58,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:55:58,399 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:55:58,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:55:58,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:55:58,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:55:58,518 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:55:58,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:55:58,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:55:58,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:55:58,737 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:55:58,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:55:58,788 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 24 for LOIs [2022-11-23 14:55:58,795 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:55:59,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [543632563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:55:59,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:55:59,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 4, 5] total 21 [2022-11-23 14:55:59,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049193695] [2022-11-23 14:55:59,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:55:59,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:55:59,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:55:59,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:55:59,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:55:59,947 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 13 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:56:00,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:56:00,825 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-11-23 14:56:00,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 14:56:00,826 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-23 14:56:00,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:56:00,826 INFO L225 Difference]: With dead ends: 46 [2022-11-23 14:56:00,826 INFO L226 Difference]: Without dead ends: 34 [2022-11-23 14:56:00,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-11-23 14:56:00,827 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 43 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:56:00,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 57 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:56:00,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-23 14:56:00,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-23 14:56:00,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.32) internal successors, (33), 28 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:56:00,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-11-23 14:56:00,838 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 16 [2022-11-23 14:56:00,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:56:00,838 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-11-23 14:56:00,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:56:00,839 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-11-23 14:56:00,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 14:56:00,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:56:00,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:56:00,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-23 14:56:01,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:56:01,047 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-23 14:56:01,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:56:01,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1471710425, now seen corresponding path program 1 times [2022-11-23 14:56:01,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:56:01,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94792345] [2022-11-23 14:56:01,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:56:01,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:56:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:56:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:56:01,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:56:01,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94792345] [2022-11-23 14:56:01,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94792345] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:56:01,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792816053] [2022-11-23 14:56:01,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:56:01,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:56:01,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:56:01,113 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:56:01,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 14:56:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:56:01,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:56:01,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:56:01,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:56:01,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:56:01,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:56:01,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792816053] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:56:01,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [871491015] [2022-11-23 14:56:01,254 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-23 14:56:01,255 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:56:01,255 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:56:01,255 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:56:01,256 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:56:01,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,373 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-23 14:56:01,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-23 14:56:01,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-23 14:56:01,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-23 14:56:01,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-23 14:56:01,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:01,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:01,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:01,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:01,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:01,939 INFO L321 Elim1Store]: treesize reduction 176, result has 19.3 percent of original size [2022-11-23 14:56:01,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 429 treesize of output 398 [2022-11-23 14:56:02,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:02,529 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-23 14:56:02,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-23 14:56:02,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:02,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:02,628 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:02,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:02,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:02,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:02,726 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:02,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:02,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:02,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:02,960 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:02,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:03,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:03,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:03,104 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:03,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:03,146 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 24 for LOIs [2022-11-23 14:56:03,152 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:56:04,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [871491015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:56:04,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:56:04,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5, 4, 5] total 22 [2022-11-23 14:56:04,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820059190] [2022-11-23 14:56:04,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:56:04,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 14:56:04,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:56:04,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 14:56:04,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-11-23 14:56:04,229 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:56:05,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:56:05,118 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-11-23 14:56:05,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 14:56:05,121 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-23 14:56:05,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:56:05,122 INFO L225 Difference]: With dead ends: 51 [2022-11-23 14:56:05,122 INFO L226 Difference]: Without dead ends: 49 [2022-11-23 14:56:05,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-11-23 14:56:05,124 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 41 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:56:05,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 55 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:56:05,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-23 14:56:05,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2022-11-23 14:56:05,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 34 states have internal predecessors, (39), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 14:56:05,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-11-23 14:56:05,144 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 17 [2022-11-23 14:56:05,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:56:05,144 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-11-23 14:56:05,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:56:05,145 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-11-23 14:56:05,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 14:56:05,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:56:05,147 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:56:05,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-23 14:56:05,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 14:56:05,354 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-23 14:56:05,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:56:05,354 INFO L85 PathProgramCache]: Analyzing trace with hash -750509477, now seen corresponding path program 1 times [2022-11-23 14:56:05,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:56:05,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070870764] [2022-11-23 14:56:05,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:56:05,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:56:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:56:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 14:56:05,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:56:05,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070870764] [2022-11-23 14:56:05,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070870764] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:56:05,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186324224] [2022-11-23 14:56:05,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:56:05,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:56:05,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:56:05,433 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:56:05,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 14:56:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:56:05,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:56:05,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:56:05,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 14:56:05,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:56:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 14:56:05,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186324224] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:56:05,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1728744428] [2022-11-23 14:56:05,604 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-23 14:56:05,604 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:56:05,604 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:56:05,605 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:56:05,605 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:56:05,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:05,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:05,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:05,728 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-23 14:56:05,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-23 14:56:05,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:05,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:05,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:05,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-23 14:56:05,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:05,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:05,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-23 14:56:05,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:05,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:05,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:05,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:05,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-23 14:56:06,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:06,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:06,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:06,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:06,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:06,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:06,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:06,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:06,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:06,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:06,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:06,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:06,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:06,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:06,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:06,343 INFO L321 Elim1Store]: treesize reduction 141, result has 7.2 percent of original size [2022-11-23 14:56:06,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 461 treesize of output 392 [2022-11-23 14:56:06,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:06,515 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-23 14:56:06,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-23 14:56:06,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:06,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:06,648 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:06,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:06,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:06,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:06,791 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:06,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:07,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:07,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:07,720 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:07,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:07,763 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-23 14:56:07,777 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:56:09,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1728744428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:56:09,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:56:09,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 4, 5] total 21 [2022-11-23 14:56:09,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006274629] [2022-11-23 14:56:09,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:56:09,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:56:09,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:56:09,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:56:09,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:56:09,450 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 13 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:56:10,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:56:10,867 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2022-11-23 14:56:10,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 14:56:10,869 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-11-23 14:56:10,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:56:10,870 INFO L225 Difference]: With dead ends: 51 [2022-11-23 14:56:10,870 INFO L226 Difference]: Without dead ends: 50 [2022-11-23 14:56:10,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2022-11-23 14:56:10,871 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 30 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:56:10,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 65 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:56:10,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-23 14:56:10,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2022-11-23 14:56:10,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 32 states have (on average 1.21875) internal successors, (39), 34 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 14:56:10,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-11-23 14:56:10,885 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 23 [2022-11-23 14:56:10,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:56:10,886 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-11-23 14:56:10,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:56:10,886 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-11-23 14:56:10,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 14:56:10,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:56:10,887 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:56:10,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:56:11,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:56:11,096 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-23 14:56:11,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:56:11,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2103080133, now seen corresponding path program 1 times [2022-11-23 14:56:11,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:56:11,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390565106] [2022-11-23 14:56:11,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:56:11,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:56:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:56:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 14:56:11,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:56:11,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390565106] [2022-11-23 14:56:11,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390565106] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:56:11,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908638066] [2022-11-23 14:56:11,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:56:11,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:56:11,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:56:11,180 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:56:11,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 14:56:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:56:11,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:56:11,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:56:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 14:56:11,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:56:11,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 14:56:11,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908638066] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:56:11,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [326198209] [2022-11-23 14:56:11,339 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-23 14:56:11,339 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:56:11,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:56:11,340 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:56:11,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:56:11,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,426 INFO L321 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2022-11-23 14:56:11,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 42 [2022-11-23 14:56:11,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,540 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-23 14:56:11,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-23 14:56:11,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-23 14:56:11,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-23 14:56:11,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,985 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:11,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:11,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:11,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:11,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:12,024 INFO L321 Elim1Store]: treesize reduction 141, result has 7.2 percent of original size [2022-11-23 14:56:12,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 461 treesize of output 392 [2022-11-23 14:56:12,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:12,163 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-23 14:56:12,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-23 14:56:12,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:12,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:12,276 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:12,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:12,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:12,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:12,377 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:12,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:13,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:13,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:13,251 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:13,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:13,293 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-23 14:56:13,310 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:56:15,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [326198209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:56:15,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:56:15,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5, 4, 5] total 23 [2022-11-23 14:56:15,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937563782] [2022-11-23 14:56:15,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:56:15,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:56:15,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:56:15,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:56:15,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2022-11-23 14:56:15,075 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 15 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:56:15,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:56:15,905 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2022-11-23 14:56:15,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 14:56:15,905 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-11-23 14:56:15,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:56:15,906 INFO L225 Difference]: With dead ends: 52 [2022-11-23 14:56:15,906 INFO L226 Difference]: Without dead ends: 35 [2022-11-23 14:56:15,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2022-11-23 14:56:15,907 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 35 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:56:15,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 55 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:56:15,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-23 14:56:15,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-23 14:56:15,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 28 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:56:15,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-11-23 14:56:15,917 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2022-11-23 14:56:15,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:56:15,917 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-11-23 14:56:15,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:56:15,917 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-11-23 14:56:15,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 14:56:15,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:56:15,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:56:15,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 14:56:16,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:56:16,124 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-23 14:56:16,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:56:16,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1790957216, now seen corresponding path program 1 times [2022-11-23 14:56:16,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:56:16,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543883456] [2022-11-23 14:56:16,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:56:16,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:56:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:56:16,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 14:56:16,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:56:16,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543883456] [2022-11-23 14:56:16,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543883456] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:56:16,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032704466] [2022-11-23 14:56:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:56:16,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:56:16,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:56:16,202 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:56:16,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 14:56:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:56:16,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:56:16,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:56:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 14:56:16,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:56:16,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 14:56:16,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032704466] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:56:16,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [545825002] [2022-11-23 14:56:16,345 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-23 14:56:16,346 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:56:16,346 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:56:16,346 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:56:16,347 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:56:16,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,444 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-23 14:56:16,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-23 14:56:16,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-23 14:56:16,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-23 14:56:16,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-23 14:56:16,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,840 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:16,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:16,844 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:16,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:16,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:16,879 INFO L321 Elim1Store]: treesize reduction 141, result has 7.2 percent of original size [2022-11-23 14:56:16,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 461 treesize of output 392 [2022-11-23 14:56:16,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:16,993 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-23 14:56:16,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-23 14:56:17,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:17,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:17,073 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:17,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:17,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:17,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:17,156 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:17,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:17,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:17,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:17,357 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:17,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:17,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:17,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:18,025 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:18,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:18,048 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-23 14:56:18,064 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:56:19,592 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1865#(and (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) (< 2147483646 |ULTIMATE.start_main_#t~post7#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= |ULTIMATE.start_main_~rv~0#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-23 14:56:19,603 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:56:19,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:56:19,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 10 [2022-11-23 14:56:19,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146355905] [2022-11-23 14:56:19,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:56:19,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:56:19,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:56:19,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:56:19,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2022-11-23 14:56:19,605 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:56:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:56:19,696 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2022-11-23 14:56:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:56:19,697 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-11-23 14:56:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:56:19,699 INFO L225 Difference]: With dead ends: 71 [2022-11-23 14:56:19,699 INFO L226 Difference]: Without dead ends: 41 [2022-11-23 14:56:19,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2022-11-23 14:56:19,702 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:56:19,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 87 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:56:19,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-23 14:56:19,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-23 14:56:19,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.1875) internal successors, (38), 34 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:56:19,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-11-23 14:56:19,726 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 24 [2022-11-23 14:56:19,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:56:19,728 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-11-23 14:56:19,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:56:19,729 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-11-23 14:56:19,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-23 14:56:19,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:56:19,735 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:56:19,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 14:56:19,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:56:19,940 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-23 14:56:19,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:56:19,941 INFO L85 PathProgramCache]: Analyzing trace with hash -319433152, now seen corresponding path program 2 times [2022-11-23 14:56:19,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:56:19,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971157362] [2022-11-23 14:56:19,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:56:19,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:56:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:56:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 14:56:20,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:56:20,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971157362] [2022-11-23 14:56:20,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971157362] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:56:20,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566490182] [2022-11-23 14:56:20,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:56:20,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:56:20,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:56:20,015 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:56:20,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 14:56:20,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 14:56:20,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:56:20,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:56:20,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:56:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:56:20,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:56:20,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566490182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:56:20,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:56:20,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-23 14:56:20,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489581439] [2022-11-23 14:56:20,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:56:20,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:56:20,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:56:20,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:56:20,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:56:20,118 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:56:20,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:56:20,163 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2022-11-23 14:56:20,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:56:20,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-11-23 14:56:20,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:56:20,164 INFO L225 Difference]: With dead ends: 42 [2022-11-23 14:56:20,165 INFO L226 Difference]: Without dead ends: 41 [2022-11-23 14:56:20,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:56:20,166 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:56:20,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 34 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:56:20,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-23 14:56:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2022-11-23 14:56:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:56:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-11-23 14:56:20,175 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 30 [2022-11-23 14:56:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:56:20,176 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-11-23 14:56:20,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:56:20,176 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-11-23 14:56:20,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-23 14:56:20,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:56:20,177 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:56:20,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 14:56:20,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 14:56:20,382 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-23 14:56:20,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:56:20,383 INFO L85 PathProgramCache]: Analyzing trace with hash 436674508, now seen corresponding path program 1 times [2022-11-23 14:56:20,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:56:20,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024703366] [2022-11-23 14:56:20,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:56:20,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:56:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:56:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 14:56:20,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:56:20,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024703366] [2022-11-23 14:56:20,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024703366] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:56:20,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984835294] [2022-11-23 14:56:20,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:56:20,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:56:20,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:56:20,445 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:56:20,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 14:56:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:56:20,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 14:56:20,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:56:20,599 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 14:56:20,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:56:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 14:56:20,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984835294] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:56:20,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [809086459] [2022-11-23 14:56:20,695 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-23 14:56:20,695 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:56:20,696 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:56:20,696 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:56:20,696 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:56:20,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:20,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:20,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:20,777 INFO L321 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2022-11-23 14:56:20,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 42 [2022-11-23 14:56:20,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:20,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:20,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:20,866 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-23 14:56:20,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-23 14:56:20,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:20,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:20,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-23 14:56:20,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:20,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:20,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:20,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:20,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-23 14:56:21,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:21,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:21,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:21,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:21,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:21,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:21,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:21,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:21,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:21,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:21,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:21,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:21,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:21,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:21,289 INFO L321 Elim1Store]: treesize reduction 176, result has 19.3 percent of original size [2022-11-23 14:56:21,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 429 treesize of output 398 [2022-11-23 14:56:21,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:21,710 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-23 14:56:21,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-23 14:56:21,768 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:21,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:21,800 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:21,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:21,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:21,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:21,882 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:21,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:22,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:22,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:22,627 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:22,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:22,658 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-23 14:56:22,659 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:56:24,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [809086459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:56:24,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:56:24,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [4, 8, 9] total 34 [2022-11-23 14:56:24,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526827356] [2022-11-23 14:56:24,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:56:24,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 14:56:24,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:56:24,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 14:56:24,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=963, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 14:56:24,402 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 18 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:56:26,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:56:26,157 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2022-11-23 14:56:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 14:56:26,158 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-11-23 14:56:26,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:56:26,159 INFO L225 Difference]: With dead ends: 52 [2022-11-23 14:56:26,159 INFO L226 Difference]: Without dead ends: 50 [2022-11-23 14:56:26,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=222, Invalid=1418, Unknown=0, NotChecked=0, Total=1640 [2022-11-23 14:56:26,161 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 60 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:56:26,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 48 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:56:26,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-23 14:56:26,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2022-11-23 14:56:26,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.15625) internal successors, (37), 33 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:56:26,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-11-23 14:56:26,175 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 31 [2022-11-23 14:56:26,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:56:26,175 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-11-23 14:56:26,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:56:26,175 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-11-23 14:56:26,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-23 14:56:26,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:56:26,176 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:56:26,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 14:56:26,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 14:56:26,377 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-23 14:56:26,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:56:26,377 INFO L85 PathProgramCache]: Analyzing trace with hash 923284082, now seen corresponding path program 1 times [2022-11-23 14:56:26,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:56:26,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061819566] [2022-11-23 14:56:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:56:26,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:56:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:56:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-23 14:56:26,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:56:26,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061819566] [2022-11-23 14:56:26,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061819566] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:56:26,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105016015] [2022-11-23 14:56:26,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:56:26,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:56:26,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:56:26,488 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:56:26,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 14:56:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:56:26,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 14:56:26,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:56:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:56:26,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:56:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:56:26,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105016015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:56:26,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1295836772] [2022-11-23 14:56:26,814 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-23 14:56:26,814 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:56:26,819 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:56:26,819 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:56:26,819 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:56:26,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:26,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:26,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:26,904 INFO L321 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2022-11-23 14:56:26,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 42 [2022-11-23 14:56:26,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:26,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:26,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,002 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-23 14:56:27,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-23 14:56:27,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-23 14:56:27,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-23 14:56:27,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:27,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:27,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:27,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:56:27,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:27,445 INFO L321 Elim1Store]: treesize reduction 141, result has 7.2 percent of original size [2022-11-23 14:56:27,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 441 treesize of output 392 [2022-11-23 14:56:27,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:27,577 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-23 14:56:27,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-23 14:56:27,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:27,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:27,689 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:27,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:27,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:27,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:27,789 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:27,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:29,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:29,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:56:29,250 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-23 14:56:29,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-23 14:56:29,281 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-23 14:56:29,283 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:56:31,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1295836772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:56:31,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:56:31,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [4, 8, 9] total 34 [2022-11-23 14:56:31,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565753849] [2022-11-23 14:56:31,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:56:31,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 14:56:31,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:56:31,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 14:56:31,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=962, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 14:56:31,700 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:56:33,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:56:33,641 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-11-23 14:56:33,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 14:56:33,641 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-11-23 14:56:33,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:56:33,642 INFO L225 Difference]: With dead ends: 39 [2022-11-23 14:56:33,642 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 14:56:33,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=214, Invalid=1346, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 14:56:33,643 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 46 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:56:33,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 8 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:56:33,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 14:56:33,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 14:56:33,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:56:33,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 14:56:33,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2022-11-23 14:56:33,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:56:33,645 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 14:56:33,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:56:33,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 14:56:33,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 14:56:33,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-11-23 14:56:33,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-11-23 14:56:33,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-11-23 14:56:33,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-11-23 14:56:33,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-11-23 14:56:33,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-11-23 14:56:33,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-11-23 14:56:33,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-11-23 14:56:33,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-23 14:56:33,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:56:33,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 14:56:35,504 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2022-11-23 14:56:35,504 INFO L899 garLoopResultBuilder]: For program point L23-3(line 23) no Hoare annotation was computed. [2022-11-23 14:56:35,505 INFO L899 garLoopResultBuilder]: For program point L23-4(line 23) no Hoare annotation was computed. [2022-11-23 14:56:35,505 INFO L895 garLoopResultBuilder]: At program point L23-5(lines 23 26) the Hoare annotation is: (let ((.cse5 (<= 1 |ULTIMATE.start_main_~j~0#1|))) (and (let ((.cse0 (<= 0 |#NULL.base|)) (.cse1 (<= |ULTIMATE.start_main_~#b~0#1.offset| 0)) (.cse2 (<= |ULTIMATE.start_main_~i~0#1| 0)) (.cse3 (<= 0 |ULTIMATE.start_main_~#c~0#1.offset|)) (.cse4 (<= 0 |ULTIMATE.start_main_~#a~0#1.offset|)) (.cse6 (<= |#NULL.offset| 0)) (.cse7 (<= |ULTIMATE.start_main_~#c~0#1.offset| 0)) (.cse8 (<= 0 |ULTIMATE.start_main_~i~0#1|)) (.cse9 (<= |ULTIMATE.start_main_~#a~0#1.offset| 0)) (.cse10 (<= |#NULL.base| 0)) (.cse11 (<= |ULTIMATE.start_main_~rv~0#1| 1)) (.cse12 (<= 0 |#NULL.offset|)) (.cse13 (<= 1 |ULTIMATE.start_main_~rv~0#1|)) (.cse14 (<= 0 |ULTIMATE.start_main_~#b~0#1.offset|))) (or (and .cse0 (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) .cse1 .cse2 .cse3 .cse4 .cse5 (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) .cse6 .cse7 .cse8 (<= |ULTIMATE.start_main_~j~0#1| 2147483647) .cse9 .cse10 .cse11 (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) .cse12 .cse13 .cse14 (<= 0 |#StackHeapBarrier|)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse6 (<= 0 |ULTIMATE.start_main_~j~0#1|) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (<= |ULTIMATE.start_main_~j~0#1| 0)))) (or .cse5 (let ((.cse15 (select |#memory_int| 1))) (and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#c~0#1.base|) (= 34 (select |#length| 2)) (= 400000 (select |#length| |ULTIMATE.start_main_~#b~0#1.base|)) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#a~0#1.base|) (= 2 (select |#length| 1)) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#b~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#c~0#1.base|) 1) (= 400000 (select |#length| |ULTIMATE.start_main_~#a~0#1.base|)) (= (select |#valid| 1) 1) (= (select |#valid| |ULTIMATE.start_main_~#b~0#1.base|) 1) (= (select |#valid| |ULTIMATE.start_main_~#a~0#1.base|) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (not (= |ULTIMATE.start_main_~#c~0#1.base| |ULTIMATE.start_main_~#b~0#1.base|)) (not (= |ULTIMATE.start_main_~#c~0#1.base| |ULTIMATE.start_main_~#a~0#1.base|)) (= (select .cse15 0) 48) (not (= |ULTIMATE.start_main_~#b~0#1.base| |ULTIMATE.start_main_~#a~0#1.base|)) (= (select |#length| |ULTIMATE.start_main_~#c~0#1.base|) 400000) (= (select .cse15 1) 0) (< 0 |#StackHeapBarrier|)))))) [2022-11-23 14:56:35,505 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 41) no Hoare annotation was computed. [2022-11-23 14:56:35,505 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 40) no Hoare annotation was computed. [2022-11-23 14:56:35,505 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 36 40) no Hoare annotation was computed. [2022-11-23 14:56:35,506 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-11-23 14:56:35,511 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 14:56:35,511 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-11-23 14:56:35,511 INFO L895 garLoopResultBuilder]: At program point L28-1(lines 16 45) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= |ULTIMATE.start_main_~rv~0#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= |#NULL.base| 0)) [2022-11-23 14:56:35,511 INFO L899 garLoopResultBuilder]: For program point L41-3(line 41) no Hoare annotation was computed. [2022-11-23 14:56:35,512 INFO L899 garLoopResultBuilder]: For program point L41-4(line 41) no Hoare annotation was computed. [2022-11-23 14:56:35,512 INFO L895 garLoopResultBuilder]: At program point L41-5(lines 41 43) the Hoare annotation is: (let ((.cse0 (<= 100000 |ULTIMATE.start_main_~i~0#1|)) (.cse1 (<= 0 |ULTIMATE.start_main_~#a~0#1.base|)) (.cse2 (= |ULTIMATE.start_main_~#b~0#1.offset| 0)) (.cse3 (<= 0 |ULTIMATE.start_main_~#c~0#1.base|)) (.cse4 (<= |ULTIMATE.start_main_~j~0#1| 2147483647)) (.cse5 (<= |ULTIMATE.start_main_~rv~0#1| 1)) (.cse6 (= |ULTIMATE.start_main_~#a~0#1.offset| 0)) (.cse7 (<= 100000 |ULTIMATE.start_main_~j~0#1|)) (.cse8 (= |#NULL.offset| 0)) (.cse9 (<= 0 |ULTIMATE.start_main_~#b~0#1.base|)) (.cse10 (<= 0 |#StackHeapBarrier|)) (.cse11 (= |ULTIMATE.start_main_~#c~0#1.offset| 0)) (.cse12 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= |ULTIMATE.start_main_~x~0#1| 0) .cse9 .cse10 .cse11 .cse12) (and .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~x~0#1| 2147483647) .cse3 (<= 1 |ULTIMATE.start_main_~x~0#1|) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))) [2022-11-23 14:56:35,512 INFO L899 garLoopResultBuilder]: For program point L37-3(line 37) no Hoare annotation was computed. [2022-11-23 14:56:35,512 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-11-23 14:56:35,512 INFO L899 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2022-11-23 14:56:35,512 INFO L899 garLoopResultBuilder]: For program point L37-4(line 37) no Hoare annotation was computed. [2022-11-23 14:56:35,513 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 14:56:35,513 INFO L899 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2022-11-23 14:56:35,513 INFO L895 garLoopResultBuilder]: At program point L37-5(lines 37 39) the Hoare annotation is: (let ((.cse0 (<= 100000 |ULTIMATE.start_main_~i~0#1|)) (.cse1 (<= 0 |ULTIMATE.start_main_~#a~0#1.base|)) (.cse2 (<= 0 |ULTIMATE.start_main_~#c~0#1.base|)) (.cse3 (<= |ULTIMATE.start_main_~j~0#1| 2147483647)) (.cse4 (<= |ULTIMATE.start_main_~rv~0#1| 1)) (.cse5 (<= 100000 |ULTIMATE.start_main_~j~0#1|)) (.cse6 (<= 0 |ULTIMATE.start_main_~#b~0#1.base|)) (.cse7 (<= 0 |#StackHeapBarrier|)) (.cse8 (= |ULTIMATE.start_main_~#c~0#1.offset| 0)) (.cse9 (= |#NULL.base| 0))) (or (and .cse0 .cse1 (<= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#a~0#1.offset|) .cse2 (<= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) .cse3 (<= |ULTIMATE.start_main_~#a~0#1.offset| 0) .cse4 .cse5 .cse6 (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~#b~0#1.offset|) .cse7 .cse8 .cse9) (and .cse0 .cse1 (= |ULTIMATE.start_main_~#b~0#1.offset| 0) .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~#a~0#1.offset| 0) .cse5 (= |#NULL.offset| 0) (not (= |ULTIMATE.start_main_~rv~0#1| 0)) (= |ULTIMATE.start_main_~x~0#1| 0) .cse6 .cse7 .cse8 .cse9))) [2022-11-23 14:56:35,513 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-11-23 14:56:35,513 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 4))) (and (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) (< |ULTIMATE.start_main_~x~0#1| 100000) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| .cse0)) |ULTIMATE.start_main_#t~mem11#1|) (<= |ULTIMATE.start_main_~rv~0#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#c~0#1.base|) (+ |ULTIMATE.start_main_~#c~0#1.offset| .cse0)) |ULTIMATE.start_main_#t~mem12#1|) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= |#NULL.base| 0))) [2022-11-23 14:56:35,514 INFO L899 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2022-11-23 14:56:35,514 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= |ULTIMATE.start_main_~rv~0#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (let ((.cse2 (* |ULTIMATE.start_main_~x~0#1| 4))) (let ((.cse0 (= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| .cse2)) |ULTIMATE.start_main_#t~mem8#1|)) (.cse1 (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#b~0#1.base|) (+ |ULTIMATE.start_main_~#b~0#1.offset| .cse2))))) (or (and .cse0 (<= 1 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 100000) .cse1) (and .cse0 .cse1 (not (= |ULTIMATE.start_main_~rv~0#1| 0)) (= |ULTIMATE.start_main_~x~0#1| 0))))) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= |#NULL.base| 0)) [2022-11-23 14:56:35,514 INFO L899 garLoopResultBuilder]: For program point L38-1(line 38) no Hoare annotation was computed. [2022-11-23 14:56:35,514 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2022-11-23 14:56:35,515 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 41) no Hoare annotation was computed. [2022-11-23 14:56:35,515 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(line 13) the Hoare annotation is: true [2022-11-23 14:56:35,515 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2022-11-23 14:56:35,517 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:56:35,519 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:56:35,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:56:35 BoogieIcfgContainer [2022-11-23 14:56:35,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:56:35,561 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:56:35,561 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:56:35,561 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:56:35,561 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:55:53" (3/4) ... [2022-11-23 14:56:35,565 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 14:56:35,571 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-23 14:56:35,575 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2022-11-23 14:56:35,575 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-23 14:56:35,576 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 14:56:35,576 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 14:56:35,630 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 14:56:35,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:56:35,631 INFO L158 Benchmark]: Toolchain (without parser) took 43184.60ms. Allocated memory was 163.6MB in the beginning and 343.9MB in the end (delta: 180.4MB). Free memory was 127.8MB in the beginning and 291.2MB in the end (delta: -163.4MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2022-11-23 14:56:35,631 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 115.3MB. Free memory was 59.6MB in the beginning and 59.5MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:56:35,636 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.54ms. Allocated memory is still 163.6MB. Free memory was 127.8MB in the beginning and 117.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:56:35,637 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.51ms. Allocated memory is still 163.6MB. Free memory was 116.9MB in the beginning and 115.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:56:35,637 INFO L158 Benchmark]: Boogie Preprocessor took 32.54ms. Allocated memory is still 163.6MB. Free memory was 115.2MB in the beginning and 114.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:56:35,637 INFO L158 Benchmark]: RCFGBuilder took 594.00ms. Allocated memory is still 163.6MB. Free memory was 114.0MB in the beginning and 98.5MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 14:56:35,637 INFO L158 Benchmark]: TraceAbstraction took 42012.12ms. Allocated memory was 163.6MB in the beginning and 343.9MB in the end (delta: 180.4MB). Free memory was 98.0MB in the beginning and 294.3MB in the end (delta: -196.3MB). Peak memory consumption was 173.0MB. Max. memory is 16.1GB. [2022-11-23 14:56:35,639 INFO L158 Benchmark]: Witness Printer took 70.08ms. Allocated memory is still 343.9MB. Free memory was 294.3MB in the beginning and 291.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:56:35,645 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 115.3MB. Free memory was 59.6MB in the beginning and 59.5MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 386.54ms. Allocated memory is still 163.6MB. Free memory was 127.8MB in the beginning and 117.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.51ms. Allocated memory is still 163.6MB. Free memory was 116.9MB in the beginning and 115.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.54ms. Allocated memory is still 163.6MB. Free memory was 115.2MB in the beginning and 114.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 594.00ms. Allocated memory is still 163.6MB. Free memory was 114.0MB in the beginning and 98.5MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 42012.12ms. Allocated memory was 163.6MB in the beginning and 343.9MB in the end (delta: 180.4MB). Free memory was 98.0MB in the beginning and 294.3MB in the end (delta: -196.3MB). Peak memory consumption was 173.0MB. Max. memory is 16.1GB. * Witness Printer took 70.08ms. Allocated memory is still 343.9MB. Free memory was 294.3MB in the beginning and 291.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 30 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 41.9s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 350 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 327 mSDsluCounter, 677 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 466 mSDsCounter, 87 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1520 IncrementalHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 87 mSolverCounterUnsat, 211 mSDtfsCounter, 1520 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 648 GetRequests, 428 SyntacticMatches, 3 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1734 ImplicationChecksByTransitivity, 17.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=9, InterpolantAutomatonStates: 132, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 36 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 19 PreInvPairs, 35 NumberOfFragments, 612 HoareAnnotationTreeSize, 19 FomulaSimplifications, 759 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 6272 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 480 NumberOfCodeBlocks, 461 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 620 ConstructedInterpolants, 0 QuantifiedInterpolants, 996 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1511 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 33 InterpolantComputations, 7 PerfectInterpolantSequences, 195/266 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 12.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 12, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 124, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 264, TOOLS_POST_TIME: 8.4s, TOOLS_POST_CALL_APPLICATIONS: 64, TOOLS_POST_CALL_TIME: 2.0s, TOOLS_POST_RETURN_APPLICATIONS: 56, TOOLS_POST_RETURN_TIME: 0.4s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 384, TOOLS_QUANTIFIERELIM_TIME: 10.6s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.7s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 568, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 78, DOMAIN_JOIN_TIME: 0.6s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 29, DOMAIN_WIDEN_TIME: 0.5s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 46, DOMAIN_ISSUBSETEQ_TIME: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 124, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 17, LOOP_SUMMARIZER_CACHE_MISSES: 17, LOOP_SUMMARIZER_OVERALL_TIME: 7.9s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 7.9s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 46, CALL_SUMMARIZER_APPLICATIONS: 56, CALL_SUMMARIZER_CACHE_MISSES: 6, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.1s, DAG_COMPRESSION_PROCESSED_NODES: 2989, DAG_COMPRESSION_RETAINED_NODES: 394, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((((((((((((((((0 <= #NULL && 0 <= a) && b <= 0) && i <= 0) && 0 <= c) && 0 <= a) && 1 <= j) && 0 <= c) && #NULL <= 0) && c <= 0) && 0 <= i) && j <= 2147483647) && a <= 0) && #NULL <= 0) && rv <= 1) && 0 <= b) && 0 <= #NULL) && 1 <= rv) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) || (((((((((((((((0 <= #NULL && b <= 0) && i <= 0) && 0 <= c) && 0 <= a) && #NULL <= 0) && 0 <= j) && c <= 0) && 0 <= i) && a <= 0) && #NULL <= 0) && rv <= 1) && 0 <= #NULL) && 1 <= rv) && 0 <= b) && j <= 0)) && (1 <= j || (((((((((((((((((((unknown-#StackHeapBarrier-unknown < c && 34 == unknown-#length-unknown[2]) && 400000 == unknown-#length-unknown[b]) && unknown-#StackHeapBarrier-unknown < a) && 2 == unknown-#length-unknown[1]) && unknown-#StackHeapBarrier-unknown < b) && \valid[c] == 1) && 400000 == unknown-#length-unknown[a]) && \valid[1] == 1) && \valid[b] == 1) && \valid[a] == 1) && \valid[0] == 0) && \valid[2] == 1) && !(c == b)) && !(c == a)) && unknown-#memory_int-unknown[1][0] == 48) && !(b == a)) && unknown-#length-unknown[c] == 400000) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown)) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((((((((((100000 <= i && 0 <= a) && b <= 0) && x <= 2147483647) && 0 <= a) && 0 <= c) && #NULL <= 0) && 1 <= x) && j <= 2147483647) && a <= 0) && rv <= 1) && 100000 <= j) && 0 <= b) && 0 <= #NULL) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && c == 0) && #NULL == 0) || ((((((((((((((100000 <= i && 0 <= a) && b == 0) && 0 <= c) && j <= 2147483647) && rv <= 1) && a == 0) && 100000 <= j) && #NULL == 0) && !(rv == 0)) && x == 0) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && c == 0) && #NULL == 0) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (((((((((((0 <= a && b == 0) && 0 <= c) && 0 <= i) && j <= 2147483647) && rv <= 1) && a == 0) && 100000 <= j) && #NULL == 0) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && c == 0) && #NULL == 0 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (((((((((((((100000 <= i && 0 <= a) && b == 0) && 0 <= c) && j <= 2147483647) && rv <= 1) && a == 0) && 100000 <= j) && #NULL == 0) && x == 0) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && c == 0) && #NULL == 0) || ((((((((((((((100000 <= i && 0 <= a) && b == 0) && x <= 2147483647) && 0 <= c) && 1 <= x) && j <= 2147483647) && rv <= 1) && a == 0) && 100000 <= j) && #NULL == 0) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && c == 0) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2022-11-23 14:56:35,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ccfe3d-dc56-4f56-bef8-4c7faf0bd955/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE