./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/twisted.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/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_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/twisted.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/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 64bit --witnessprinter.graph.data.programhash 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 --- 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 15:39:46,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:39:46,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:39:46,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:39:46,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:39:46,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:39:46,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:39:46,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:39:46,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:39:46,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:39:46,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:39:46,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:39:46,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:39:46,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:39:46,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:39:46,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:39:46,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:39:46,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:39:46,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:39:46,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:39:46,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:39:46,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:39:46,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:39:46,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:39:46,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:39:46,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:39:46,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:39:46,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:39:46,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:39:46,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:39:46,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:39:46,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:39:46,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:39:46,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:39:46,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:39:46,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:39:46,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:39:46,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:39:46,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:39:46,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:39:46,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:39:46,422 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 15:39:46,467 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:39:46,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:39:46,468 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:39:46,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:39:46,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:39:46,470 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:39:46,470 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:39:46,470 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:39:46,470 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:39:46,471 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:39:46,472 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:39:46,472 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:39:46,472 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:39:46,473 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:39:46,473 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:39:46,473 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:39:46,473 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:39:46,474 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:39:46,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:39:46,475 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:39:46,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:39:46,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:39:46,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:39:46,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:39:46,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:39:46,476 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:39:46,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:39:46,477 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:39:46,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:39:46,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:39:46,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:39:46,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:39:46,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:39:46,479 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:39:46,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:39:46,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:39:46,480 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:39:46,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:39:46,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:39:46,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:39:46,481 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_bcc2c106-6293-46e4-90ce-a3e82cae81cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 [2022-11-23 15:39:46,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:39:46,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:39:46,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:39:46,845 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:39:46,846 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:39:46,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/termination-numeric/twisted.c [2022-11-23 15:39:50,054 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:39:50,274 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:39:50,275 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/sv-benchmarks/c/termination-numeric/twisted.c [2022-11-23 15:39:50,283 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/data/d4f142e4f/bc1d3880ab9749009360603482ea31db/FLAG2d5f433b6 [2022-11-23 15:39:50,304 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/data/d4f142e4f/bc1d3880ab9749009360603482ea31db [2022-11-23 15:39:50,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:39:50,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:39:50,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:39:50,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:39:50,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:39:50,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:39:50" (1/1) ... [2022-11-23 15:39:50,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7803f3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:50, skipping insertion in model container [2022-11-23 15:39:50,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:39:50" (1/1) ... [2022-11-23 15:39:50,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:39:50,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:39:50,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:39:50,543 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:39:50,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:39:50,573 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:39:50,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:50 WrapperNode [2022-11-23 15:39:50,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:39:50,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:39:50,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:39:50,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:39:50,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:50" (1/1) ... [2022-11-23 15:39:50,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:50" (1/1) ... [2022-11-23 15:39:50,610 INFO L138 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2022-11-23 15:39:50,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:39:50,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:39:50,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:39:50,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:39:50,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:50" (1/1) ... [2022-11-23 15:39:50,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:50" (1/1) ... [2022-11-23 15:39:50,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:50" (1/1) ... [2022-11-23 15:39:50,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:50" (1/1) ... [2022-11-23 15:39:50,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:50" (1/1) ... [2022-11-23 15:39:50,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:50" (1/1) ... [2022-11-23 15:39:50,646 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:50" (1/1) ... [2022-11-23 15:39:50,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:50" (1/1) ... [2022-11-23 15:39:50,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:39:50,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:39:50,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:39:50,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:39:50,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:50" (1/1) ... [2022-11-23 15:39:50,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:39:50,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:39:50,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:39:50,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:39:50,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:39:50,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:39:50,855 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:39:50,858 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:39:51,079 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:39:51,110 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:39:51,111 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:39:51,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:39:51 BoogieIcfgContainer [2022-11-23 15:39:51,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:39:51,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:39:51,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:39:51,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:39:51,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:39:50" (1/3) ... [2022-11-23 15:39:51,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eef2ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:39:51, skipping insertion in model container [2022-11-23 15:39:51,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:50" (2/3) ... [2022-11-23 15:39:51,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eef2ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:39:51, skipping insertion in model container [2022-11-23 15:39:51,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:39:51" (3/3) ... [2022-11-23 15:39:51,127 INFO L112 eAbstractionObserver]: Analyzing ICFG twisted.c [2022-11-23 15:39:51,150 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:39:51,151 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-23 15:39:51,267 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:39:51,275 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;@6922e0ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:39:51,276 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-23 15:39:51,281 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:51,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 15:39:51,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:51,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 15:39:51,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:39:51,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:51,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2538354, now seen corresponding path program 1 times [2022-11-23 15:39:51,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:51,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353147266] [2022-11-23 15:39:51,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:51,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:51,601 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 15:39:51,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:51,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353147266] [2022-11-23 15:39:51,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353147266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:51,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:39:51,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:39:51,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87688111] [2022-11-23 15:39:51,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:51,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:39:51,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:51,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:39:51,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:39:51,660 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:51,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:51,773 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2022-11-23 15:39:51,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:39:51,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-23 15:39:51,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:51,786 INFO L225 Difference]: With dead ends: 38 [2022-11-23 15:39:51,786 INFO L226 Difference]: Without dead ends: 18 [2022-11-23 15:39:51,790 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 15:39:51,809 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 21 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:51,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 16 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:39:51,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-23 15:39:51,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-23 15:39:51,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:51,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-11-23 15:39:51,885 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 4 [2022-11-23 15:39:51,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:51,885 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-23 15:39:51,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:51,887 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-11-23 15:39:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:39:51,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:51,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:39:51,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:39:51,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:39:51,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:51,892 INFO L85 PathProgramCache]: Analyzing trace with hash 78689019, now seen corresponding path program 1 times [2022-11-23 15:39:51,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:51,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46745878] [2022-11-23 15:39:51,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:51,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:51,947 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 15:39:51,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:51,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46745878] [2022-11-23 15:39:51,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46745878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:51,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:39:51,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:39:51,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913227417] [2022-11-23 15:39:51,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:51,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:39:51,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:51,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:39:51,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:39:51,952 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:52,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:52,012 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-11-23 15:39:52,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:39:52,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 15:39:52,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:52,014 INFO L225 Difference]: With dead ends: 34 [2022-11-23 15:39:52,014 INFO L226 Difference]: Without dead ends: 33 [2022-11-23 15:39:52,015 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 15:39:52,016 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:52,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 31 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:39:52,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-23 15:39:52,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2022-11-23 15:39:52,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:52,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-11-23 15:39:52,024 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 5 [2022-11-23 15:39:52,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:52,025 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-11-23 15:39:52,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:52,025 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-11-23 15:39:52,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:39:52,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:52,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 15:39:52,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:39:52,027 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:39:52,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:52,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1855654287, now seen corresponding path program 1 times [2022-11-23 15:39:52,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:52,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337922596] [2022-11-23 15:39:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:52,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:52,067 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 15:39:52,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:52,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337922596] [2022-11-23 15:39:52,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337922596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:52,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:39:52,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:39:52,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462076370] [2022-11-23 15:39:52,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:52,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:39:52,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:52,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:39:52,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:39:52,071 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:52,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:52,120 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-11-23 15:39:52,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:39:52,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 15:39:52,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:52,122 INFO L225 Difference]: With dead ends: 40 [2022-11-23 15:39:52,122 INFO L226 Difference]: Without dead ends: 39 [2022-11-23 15:39:52,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:39:52,124 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:52,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:39:52,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-23 15:39:52,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-11-23 15:39:52,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 31 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 15:39:52,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2022-11-23 15:39:52,134 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 6 [2022-11-23 15:39:52,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:52,135 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-11-23 15:39:52,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:52,136 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2022-11-23 15:39:52,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:39:52,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:52,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 15:39:52,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:39:52,137 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:39:52,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:52,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1855654237, now seen corresponding path program 1 times [2022-11-23 15:39:52,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:52,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848661873] [2022-11-23 15:39:52,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:52,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:52,181 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 15:39:52,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:52,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848661873] [2022-11-23 15:39:52,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848661873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:52,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:39:52,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:39:52,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604001855] [2022-11-23 15:39:52,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:52,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:39:52,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:52,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:39:52,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:39:52,185 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 15:39:52,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:52,216 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-11-23 15:39:52,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:39:52,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 15:39:52,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:52,218 INFO L225 Difference]: With dead ends: 32 [2022-11-23 15:39:52,218 INFO L226 Difference]: Without dead ends: 31 [2022-11-23 15:39:52,219 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 15:39:52,221 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:52,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 22 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:39:52,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-23 15:39:52,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-23 15:39:52,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 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 15:39:52,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2022-11-23 15:39:52,231 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 6 [2022-11-23 15:39:52,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:52,231 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2022-11-23 15:39:52,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 15:39:52,232 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2022-11-23 15:39:52,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 15:39:52,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:52,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:39:52,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:39:52,234 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:39:52,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:52,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1690707972, now seen corresponding path program 1 times [2022-11-23 15:39:52,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:52,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384224160] [2022-11-23 15:39:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:52,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:52,276 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 15:39:52,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:52,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384224160] [2022-11-23 15:39:52,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384224160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:52,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:39:52,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:39:52,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895049120] [2022-11-23 15:39:52,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:52,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:39:52,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:52,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:39:52,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:39:52,280 INFO L87 Difference]: Start difference. First operand 31 states and 40 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 15:39:52,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:52,319 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-11-23 15:39:52,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:39:52,319 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 15:39:52,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:52,320 INFO L225 Difference]: With dead ends: 38 [2022-11-23 15:39:52,321 INFO L226 Difference]: Without dead ends: 35 [2022-11-23 15:39:52,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:39:52,322 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:52,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 20 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:39:52,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-23 15:39:52,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2022-11-23 15:39:52,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 29 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 15:39:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-11-23 15:39:52,331 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 7 [2022-11-23 15:39:52,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:52,332 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-11-23 15:39:52,332 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 15:39:52,333 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-11-23 15:39:52,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 15:39:52,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:52,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:39:52,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:39:52,334 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:39:52,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:52,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1690706434, now seen corresponding path program 1 times [2022-11-23 15:39:52,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:52,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239781590] [2022-11-23 15:39:52,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:52,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:52,379 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 15:39:52,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:52,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239781590] [2022-11-23 15:39:52,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239781590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:52,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:39:52,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:39:52,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026303580] [2022-11-23 15:39:52,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:52,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:39:52,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:52,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:39:52,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:39:52,383 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) 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 15:39:52,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:52,463 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2022-11-23 15:39:52,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:39:52,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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 15:39:52,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:52,465 INFO L225 Difference]: With dead ends: 48 [2022-11-23 15:39:52,465 INFO L226 Difference]: Without dead ends: 47 [2022-11-23 15:39:52,465 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 15:39:52,467 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:52,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 36 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:39:52,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-23 15:39:52,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2022-11-23 15:39:52,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 41 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 15:39:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2022-11-23 15:39:52,489 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 7 [2022-11-23 15:39:52,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:52,490 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2022-11-23 15:39:52,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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 15:39:52,490 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2022-11-23 15:39:52,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 15:39:52,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:52,491 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 15:39:52,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:39:52,492 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:39:52,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:52,492 INFO L85 PathProgramCache]: Analyzing trace with hash 116338326, now seen corresponding path program 1 times [2022-11-23 15:39:52,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:52,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206973400] [2022-11-23 15:39:52,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:52,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:39:52,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:52,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206973400] [2022-11-23 15:39:52,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206973400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:39:52,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721223266] [2022-11-23 15:39:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:52,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:52,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:39:52,604 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:39:52,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:39:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:52,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 15:39:52,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:39:52,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:39:52,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:39:52,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:39:52,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721223266] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:39:52,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [764200049] [2022-11-23 15:39:52,877 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-23 15:39:52,878 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:39:52,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:39:52,889 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:39:52,890 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:39:53,310 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:39:53,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [764200049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:53,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:39:53,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4] total 12 [2022-11-23 15:39:53,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346633879] [2022-11-23 15:39:53,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:53,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:39:53,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:53,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:39:53,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-23 15:39:53,678 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 15:39:54,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:54,076 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-11-23 15:39:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:39:54,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 9 [2022-11-23 15:39:54,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:54,078 INFO L225 Difference]: With dead ends: 47 [2022-11-23 15:39:54,078 INFO L226 Difference]: Without dead ends: 42 [2022-11-23 15:39:54,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-23 15:39:54,080 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:54,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 35 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:39:54,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-23 15:39:54,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2022-11-23 15:39:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 39 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 15:39:54,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2022-11-23 15:39:54,092 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 9 [2022-11-23 15:39:54,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:54,093 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2022-11-23 15:39:54,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 15:39:54,094 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2022-11-23 15:39:54,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 15:39:54,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:54,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:39:54,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:39:54,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:54,301 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:39:54,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:54,301 INFO L85 PathProgramCache]: Analyzing trace with hash -753827850, now seen corresponding path program 1 times [2022-11-23 15:39:54,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:54,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997878744] [2022-11-23 15:39:54,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:54,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:54,404 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 15:39:54,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:54,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997878744] [2022-11-23 15:39:54,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997878744] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:39:54,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942832933] [2022-11-23 15:39:54,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:54,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:54,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:39:54,414 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:39:54,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:39:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:54,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 15:39:54,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:39:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:39:54,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:39:54,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942832933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:54,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:39:54,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2022-11-23 15:39:54,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628371209] [2022-11-23 15:39:54,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:54,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:39:54,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:54,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:39:54,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:39:54,567 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:54,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:54,684 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2022-11-23 15:39:54,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:39:54,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-23 15:39:54,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:54,688 INFO L225 Difference]: With dead ends: 47 [2022-11-23 15:39:54,688 INFO L226 Difference]: Without dead ends: 46 [2022-11-23 15:39:54,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-23 15:39:54,695 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:54,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 30 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:39:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-23 15:39:54,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2022-11-23 15:39:54,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 15:39:54,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-11-23 15:39:54,712 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 10 [2022-11-23 15:39:54,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:54,712 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-11-23 15:39:54,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:54,715 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-11-23 15:39:54,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 15:39:54,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:54,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:39:54,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:39:54,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:54,922 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:39:54,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:54,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1893826793, now seen corresponding path program 1 times [2022-11-23 15:39:54,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:54,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298549214] [2022-11-23 15:39:54,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:54,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:54,987 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 15:39:54,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:54,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298549214] [2022-11-23 15:39:54,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298549214] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:39:54,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719986959] [2022-11-23 15:39:54,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:54,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:54,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:39:54,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:39:55,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:39:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:55,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 15:39:55,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:39:55,137 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 15:39:55,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:39:55,187 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 15:39:55,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719986959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:39:55,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1198219383] [2022-11-23 15:39:55,192 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-23 15:39:55,192 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:39:55,192 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:39:55,193 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:39:55,193 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:39:55,263 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:39:55,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1198219383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:55,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:39:55,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 14 [2022-11-23 15:39:55,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496377642] [2022-11-23 15:39:55,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:55,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:39:55,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:55,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:39:55,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-11-23 15:39:55,565 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 15:39:55,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:55,647 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2022-11-23 15:39:55,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:39:55,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 15:39:55,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:55,648 INFO L225 Difference]: With dead ends: 79 [2022-11-23 15:39:55,649 INFO L226 Difference]: Without dead ends: 51 [2022-11-23 15:39:55,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-11-23 15:39:55,650 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 17 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:55,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 34 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:39:55,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-23 15:39:55,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2022-11-23 15:39:55,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 45 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 15:39:55,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2022-11-23 15:39:55,661 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 11 [2022-11-23 15:39:55,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:55,662 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2022-11-23 15:39:55,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 15:39:55,662 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2022-11-23 15:39:55,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 15:39:55,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:55,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:39:55,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:39:55,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:55,868 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:39:55,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:55,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1862452426, now seen corresponding path program 1 times [2022-11-23 15:39:55,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:55,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113730989] [2022-11-23 15:39:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:55,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:55,962 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 15:39:55,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:55,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113730989] [2022-11-23 15:39:55,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113730989] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:39:55,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091694367] [2022-11-23 15:39:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:55,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:55,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:39:55,967 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:39:55,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:39:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:56,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:39:56,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:39:56,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:39:56,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:39:56,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091694367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:56,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:39:56,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2022-11-23 15:39:56,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497308397] [2022-11-23 15:39:56,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:56,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:39:56,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:56,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:39:56,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:39:56,141 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:56,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:56,306 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2022-11-23 15:39:56,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 15:39:56,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-23 15:39:56,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:56,308 INFO L225 Difference]: With dead ends: 64 [2022-11-23 15:39:56,308 INFO L226 Difference]: Without dead ends: 63 [2022-11-23 15:39:56,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-23 15:39:56,310 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 39 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:56,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 36 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:39:56,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-23 15:39:56,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2022-11-23 15:39:56,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 55 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:56,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2022-11-23 15:39:56,338 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 13 [2022-11-23 15:39:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:56,339 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2022-11-23 15:39:56,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2022-11-23 15:39:56,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 15:39:56,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:56,341 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-23 15:39:56,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:39:56,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:56,547 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:39:56,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:56,547 INFO L85 PathProgramCache]: Analyzing trace with hash 779135154, now seen corresponding path program 1 times [2022-11-23 15:39:56,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:56,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62023724] [2022-11-23 15:39:56,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:56,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:39:56,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:56,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62023724] [2022-11-23 15:39:56,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62023724] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:39:56,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349079269] [2022-11-23 15:39:56,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:56,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:56,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:39:56,606 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:39:56,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:39:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:56,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 15:39:56,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:39:56,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:39:56,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:39:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:39:56,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349079269] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:39:56,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1456409008] [2022-11-23 15:39:56,745 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:39:56,746 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:39:56,746 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:39:56,746 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:39:56,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:39:57,023 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:39:57,678 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1522#(and (<= 0 |ULTIMATE.start_f_#in~l#1|) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= |ULTIMATE.start_f_~k#1| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (< 2147483646 |ULTIMATE.start_f_#t~post1#1|) (<= |ULTIMATE.start_f_#in~k#1| 0) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (= |ULTIMATE.start_f_~i~0#1| 0) (<= |ULTIMATE.start_main_#t~nondet2#1| 0) (<= 0 |ULTIMATE.start_main_#t~nondet3#1|) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~l#1| 2147483647))' at error location [2022-11-23 15:39:57,678 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:39:57,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:39:57,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-23 15:39:57,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726772254] [2022-11-23 15:39:57,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:39:57,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 15:39:57,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:57,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 15:39:57,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-11-23 15:39:57,680 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:57,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:57,796 INFO L93 Difference]: Finished difference Result 141 states and 188 transitions. [2022-11-23 15:39:57,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 15:39:57,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 15:39:57,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:57,798 INFO L225 Difference]: With dead ends: 141 [2022-11-23 15:39:57,808 INFO L226 Difference]: Without dead ends: 140 [2022-11-23 15:39:57,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-11-23 15:39:57,810 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 59 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:57,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 82 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:39:57,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-23 15:39:57,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2022-11-23 15:39:57,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 120 states have (on average 1.4166666666666667) internal successors, (170), 123 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:57,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 170 transitions. [2022-11-23 15:39:57,830 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 170 transitions. Word has length 14 [2022-11-23 15:39:57,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:57,830 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 170 transitions. [2022-11-23 15:39:57,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:57,831 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 170 transitions. [2022-11-23 15:39:57,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 15:39:57,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:57,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:39:57,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:39:58,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 15:39:58,037 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:39:58,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:58,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1901450281, now seen corresponding path program 1 times [2022-11-23 15:39:58,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:58,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603136958] [2022-11-23 15:39:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:58,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:58,145 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 15:39:58,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:58,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603136958] [2022-11-23 15:39:58,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603136958] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:39:58,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835361441] [2022-11-23 15:39:58,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:58,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:58,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:39:58,147 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:39:58,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 15:39:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:58,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:39:58,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:39:58,323 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 15:39:58,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:39:58,417 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 15:39:58,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835361441] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:39:58,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1461893946] [2022-11-23 15:39:58,421 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:39:58,422 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:39:58,423 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:39:58,423 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:39:58,423 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:39:58,454 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:39:58,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1461893946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:58,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:39:58,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 19 [2022-11-23 15:39:58,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607358246] [2022-11-23 15:39:58,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:58,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:39:58,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:58,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:39:58,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2022-11-23 15:39:58,635 INFO L87 Difference]: Start difference. First operand 124 states and 170 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:58,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:58,710 INFO L93 Difference]: Finished difference Result 183 states and 249 transitions. [2022-11-23 15:39:58,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:39:58,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 15:39:58,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:58,713 INFO L225 Difference]: With dead ends: 183 [2022-11-23 15:39:58,713 INFO L226 Difference]: Without dead ends: 134 [2022-11-23 15:39:58,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2022-11-23 15:39:58,715 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 13 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:58,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 32 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:39:58,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-23 15:39:58,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 127. [2022-11-23 15:39:58,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 123 states have (on average 1.4065040650406504) internal successors, (173), 126 states have internal predecessors, (173), 0 states have call successors, (0), 0 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 15:39:58,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 173 transitions. [2022-11-23 15:39:58,745 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 173 transitions. Word has length 14 [2022-11-23 15:39:58,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:58,745 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 173 transitions. [2022-11-23 15:39:58,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:58,746 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 173 transitions. [2022-11-23 15:39:58,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 15:39:58,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:58,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:39:58,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 15:39:58,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 15:39:58,953 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:39:58,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:58,954 INFO L85 PathProgramCache]: Analyzing trace with hash 280664690, now seen corresponding path program 1 times [2022-11-23 15:39:58,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:58,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052705366] [2022-11-23 15:39:58,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:58,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:59,062 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 15:39:59,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:59,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052705366] [2022-11-23 15:39:59,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052705366] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:39:59,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830773339] [2022-11-23 15:39:59,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:59,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:59,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:39:59,065 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:39:59,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 15:39:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:59,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:39:59,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:39:59,272 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 15:39:59,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:39:59,363 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 15:39:59,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830773339] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:39:59,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [928250565] [2022-11-23 15:39:59,368 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:39:59,368 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:39:59,368 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:39:59,369 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:39:59,369 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:39:59,618 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:40:00,763 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2539#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|))' at error location [2022-11-23 15:40:00,763 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:40:00,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:40:00,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-23 15:40:00,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730055825] [2022-11-23 15:40:00,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:40:00,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 15:40:00,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:00,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 15:40:00,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2022-11-23 15:40:00,766 INFO L87 Difference]: Start difference. First operand 127 states and 173 transitions. Second operand has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:01,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:01,227 INFO L93 Difference]: Finished difference Result 240 states and 323 transitions. [2022-11-23 15:40:01,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 15:40:01,228 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-23 15:40:01,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:01,229 INFO L225 Difference]: With dead ends: 240 [2022-11-23 15:40:01,230 INFO L226 Difference]: Without dead ends: 229 [2022-11-23 15:40:01,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=293, Invalid=1267, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 15:40:01,231 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 100 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:01,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 48 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:40:01,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-23 15:40:01,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 193. [2022-11-23 15:40:01,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 189 states have (on average 1.3862433862433863) internal successors, (262), 192 states have internal predecessors, (262), 0 states have call successors, (0), 0 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 15:40:01,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 262 transitions. [2022-11-23 15:40:01,253 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 262 transitions. Word has length 15 [2022-11-23 15:40:01,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:01,254 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 262 transitions. [2022-11-23 15:40:01,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:01,254 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 262 transitions. [2022-11-23 15:40:01,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 15:40:01,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:01,255 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:40:01,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-23 15:40:01,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:01,461 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:40:01,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:01,461 INFO L85 PathProgramCache]: Analyzing trace with hash 111798964, now seen corresponding path program 1 times [2022-11-23 15:40:01,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:01,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299774259] [2022-11-23 15:40:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:01,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:40:01,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:01,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299774259] [2022-11-23 15:40:01,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299774259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:40:01,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:40:01,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:40:01,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617174860] [2022-11-23 15:40:01,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:40:01,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:40:01,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:01,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:40:01,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:40:01,487 INFO L87 Difference]: Start difference. First operand 193 states and 262 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:01,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:01,530 INFO L93 Difference]: Finished difference Result 297 states and 400 transitions. [2022-11-23 15:40:01,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:40:01,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-23 15:40:01,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:01,532 INFO L225 Difference]: With dead ends: 297 [2022-11-23 15:40:01,533 INFO L226 Difference]: Without dead ends: 180 [2022-11-23 15:40:01,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:40:01,535 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:01,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 27 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:40:01,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-23 15:40:01,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 149. [2022-11-23 15:40:01,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 146 states have (on average 1.2945205479452055) internal successors, (189), 148 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 15:40:01,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 189 transitions. [2022-11-23 15:40:01,557 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 189 transitions. Word has length 16 [2022-11-23 15:40:01,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:01,559 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 189 transitions. [2022-11-23 15:40:01,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:01,559 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 189 transitions. [2022-11-23 15:40:01,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 15:40:01,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:01,564 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:40:01,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 15:40:01,566 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:40:01,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:01,567 INFO L85 PathProgramCache]: Analyzing trace with hash 465927114, now seen corresponding path program 1 times [2022-11-23 15:40:01,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:01,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937093485] [2022-11-23 15:40:01,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:01,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:01,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:01,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937093485] [2022-11-23 15:40:01,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937093485] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:40:01,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981816316] [2022-11-23 15:40:01,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:01,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:01,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:40:01,682 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:40:01,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 15:40:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:01,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:40:01,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:40:01,782 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:01,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:40:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:01,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981816316] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:40:01,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1817918489] [2022-11-23 15:40:01,861 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-23 15:40:01,862 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:40:01,862 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:40:01,862 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:40:01,862 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:40:02,121 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:40:02,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1817918489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:40:02,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:40:02,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 6, 6] total 19 [2022-11-23 15:40:02,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025333087] [2022-11-23 15:40:02,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:40:02,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 15:40:02,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:02,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 15:40:02,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-11-23 15:40:02,975 INFO L87 Difference]: Start difference. First operand 149 states and 189 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:03,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:03,769 INFO L93 Difference]: Finished difference Result 269 states and 347 transitions. [2022-11-23 15:40:03,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 15:40:03,770 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-23 15:40:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:03,771 INFO L225 Difference]: With dead ends: 269 [2022-11-23 15:40:03,771 INFO L226 Difference]: Without dead ends: 212 [2022-11-23 15:40:03,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2022-11-23 15:40:03,773 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 57 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:03,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 49 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:40:03,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-23 15:40:03,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 156. [2022-11-23 15:40:03,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 154 states have (on average 1.2402597402597402) internal successors, (191), 155 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 15:40:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 191 transitions. [2022-11-23 15:40:03,802 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 191 transitions. Word has length 19 [2022-11-23 15:40:03,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:03,803 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 191 transitions. [2022-11-23 15:40:03,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:03,803 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 191 transitions. [2022-11-23 15:40:03,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 15:40:03,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:03,804 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:40:03,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 15:40:04,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 15:40:04,009 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:40:04,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:04,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1291717928, now seen corresponding path program 2 times [2022-11-23 15:40:04,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:04,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690790450] [2022-11-23 15:40:04,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:04,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:04,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:04,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690790450] [2022-11-23 15:40:04,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690790450] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:40:04,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907581050] [2022-11-23 15:40:04,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:40:04,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:04,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:40:04,153 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:40:04,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 15:40:04,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 15:40:04,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:40:04,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 15:40:04,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:40:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:04,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:40:04,557 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:04,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907581050] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:40:04,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1640242782] [2022-11-23 15:40:04,559 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:40:04,559 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:40:04,559 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:40:04,560 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:40:04,560 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:40:04,724 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:40:05,841 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4786#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|))' at error location [2022-11-23 15:40:05,841 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:40:05,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:40:05,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-11-23 15:40:05,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197271056] [2022-11-23 15:40:05,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:40:05,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-23 15:40:05,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:05,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-23 15:40:05,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 15:40:05,844 INFO L87 Difference]: Start difference. First operand 156 states and 191 transitions. Second operand has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 15:40:06,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:06,474 INFO L93 Difference]: Finished difference Result 253 states and 305 transitions. [2022-11-23 15:40:06,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-23 15:40:06,474 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 0 states have call successors, (0), 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 23 [2022-11-23 15:40:06,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:06,476 INFO L225 Difference]: With dead ends: 253 [2022-11-23 15:40:06,476 INFO L226 Difference]: Without dead ends: 240 [2022-11-23 15:40:06,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=650, Invalid=2542, Unknown=0, NotChecked=0, Total=3192 [2022-11-23 15:40:06,478 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 206 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:06,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 52 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:40:06,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-23 15:40:06,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 215. [2022-11-23 15:40:06,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 213 states have (on average 1.2206572769953052) internal successors, (260), 214 states have internal predecessors, (260), 0 states have call successors, (0), 0 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 15:40:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 260 transitions. [2022-11-23 15:40:06,519 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 260 transitions. Word has length 23 [2022-11-23 15:40:06,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:06,519 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 260 transitions. [2022-11-23 15:40:06,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 15:40:06,520 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 260 transitions. [2022-11-23 15:40:06,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 15:40:06,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:06,521 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:40:06,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 15:40:06,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 15:40:06,726 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:40:06,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:06,727 INFO L85 PathProgramCache]: Analyzing trace with hash -143122264, now seen corresponding path program 3 times [2022-11-23 15:40:06,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:06,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433284935] [2022-11-23 15:40:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:06,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:06,865 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:06,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:06,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433284935] [2022-11-23 15:40:06,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433284935] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:40:06,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807776148] [2022-11-23 15:40:06,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:40:06,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:06,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:40:06,868 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:40:06,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 15:40:06,933 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:40:06,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:40:06,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 15:40:06,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:40:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:07,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:40:07,284 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:07,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807776148] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:40:07,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1340692693] [2022-11-23 15:40:07,287 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:40:07,287 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:40:07,287 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:40:07,287 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:40:07,288 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:40:07,450 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:40:08,602 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5696#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|))' at error location [2022-11-23 15:40:08,603 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:40:08,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:40:08,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-11-23 15:40:08,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379087410] [2022-11-23 15:40:08,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:40:08,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-23 15:40:08,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:08,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-23 15:40:08,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1270, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 15:40:08,606 INFO L87 Difference]: Start difference. First operand 215 states and 260 transitions. Second operand has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 15:40:09,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:09,230 INFO L93 Difference]: Finished difference Result 322 states and 389 transitions. [2022-11-23 15:40:09,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-23 15:40:09,231 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 0 states have call successors, (0), 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 23 [2022-11-23 15:40:09,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:09,232 INFO L225 Difference]: With dead ends: 322 [2022-11-23 15:40:09,232 INFO L226 Difference]: Without dead ends: 307 [2022-11-23 15:40:09,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=623, Invalid=2683, Unknown=0, NotChecked=0, Total=3306 [2022-11-23 15:40:09,235 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 206 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:09,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 56 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:40:09,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-23 15:40:09,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 225. [2022-11-23 15:40:09,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 223 states have (on average 1.2286995515695067) internal successors, (274), 224 states have internal predecessors, (274), 0 states have call successors, (0), 0 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 15:40:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 274 transitions. [2022-11-23 15:40:09,285 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 274 transitions. Word has length 23 [2022-11-23 15:40:09,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:09,286 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 274 transitions. [2022-11-23 15:40:09,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 15:40:09,286 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 274 transitions. [2022-11-23 15:40:09,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 15:40:09,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:09,287 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 1, 1, 1] [2022-11-23 15:40:09,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 15:40:09,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 15:40:09,488 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:40:09,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:09,489 INFO L85 PathProgramCache]: Analyzing trace with hash -992878717, now seen corresponding path program 1 times [2022-11-23 15:40:09,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:09,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992510914] [2022-11-23 15:40:09,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:09,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:09,613 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:09,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:09,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992510914] [2022-11-23 15:40:09,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992510914] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:40:09,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075615088] [2022-11-23 15:40:09,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:09,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:09,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:40:09,617 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:40:09,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 15:40:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:09,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 15:40:09,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:40:09,702 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:09,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:40:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:09,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075615088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:40:09,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1123949923] [2022-11-23 15:40:09,872 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:40:09,872 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:40:09,872 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:40:09,873 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:40:09,873 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:40:10,017 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:40:10,571 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6740#(and (<= 0 |ULTIMATE.start_f_#in~l#1|) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= |ULTIMATE.start_f_~k#1| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (< 2147483646 |ULTIMATE.start_f_#t~post1#1|) (<= |ULTIMATE.start_f_#in~k#1| 0) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (= |ULTIMATE.start_f_~i~0#1| 0) (<= |ULTIMATE.start_main_#t~nondet2#1| 0) (<= 0 |ULTIMATE.start_main_#t~nondet3#1|) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~l#1| 2147483647))' at error location [2022-11-23 15:40:10,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:40:10,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:40:10,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2022-11-23 15:40:10,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824411199] [2022-11-23 15:40:10,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:40:10,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 15:40:10,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:10,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 15:40:10,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2022-11-23 15:40:10,573 INFO L87 Difference]: Start difference. First operand 225 states and 274 transitions. Second operand has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 15:40:10,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:10,927 INFO L93 Difference]: Finished difference Result 439 states and 534 transitions. [2022-11-23 15:40:10,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 15:40:10,928 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 0 states have call successors, (0), 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 26 [2022-11-23 15:40:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:10,930 INFO L225 Difference]: With dead ends: 439 [2022-11-23 15:40:10,930 INFO L226 Difference]: Without dead ends: 438 [2022-11-23 15:40:10,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=325, Invalid=1081, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 15:40:10,932 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 230 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:10,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 166 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:40:10,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-23 15:40:10,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 352. [2022-11-23 15:40:10,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 350 states have (on average 1.2485714285714287) internal successors, (437), 351 states have internal predecessors, (437), 0 states have call successors, (0), 0 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 15:40:10,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 437 transitions. [2022-11-23 15:40:10,996 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 437 transitions. Word has length 26 [2022-11-23 15:40:10,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:10,997 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 437 transitions. [2022-11-23 15:40:10,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 15:40:10,997 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 437 transitions. [2022-11-23 15:40:10,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-23 15:40:10,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:10,998 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:40:11,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-23 15:40:11,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 15:40:11,204 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:40:11,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:11,204 INFO L85 PathProgramCache]: Analyzing trace with hash 211043230, now seen corresponding path program 4 times [2022-11-23 15:40:11,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:11,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115817258] [2022-11-23 15:40:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:11,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:11,394 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:11,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:11,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115817258] [2022-11-23 15:40:11,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115817258] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:40:11,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170183812] [2022-11-23 15:40:11,395 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:40:11,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:11,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:40:11,397 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:40:11,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 15:40:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:11,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 15:40:11,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:40:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:11,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:40:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:11,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170183812] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:40:11,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [120860954] [2022-11-23 15:40:11,995 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:40:11,995 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:40:11,996 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:40:11,996 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:40:11,996 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:40:12,190 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:40:13,331 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8183#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|))' at error location [2022-11-23 15:40:13,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:40:13,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:40:13,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-11-23 15:40:13,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306842762] [2022-11-23 15:40:13,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:40:13,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-23 15:40:13,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:13,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-23 15:40:13,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=2179, Unknown=0, NotChecked=0, Total=2652 [2022-11-23 15:40:13,334 INFO L87 Difference]: Start difference. First operand 352 states and 437 transitions. Second operand has 41 states, 40 states have (on average 2.325) internal successors, (93), 40 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:14,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:14,325 INFO L93 Difference]: Finished difference Result 507 states and 616 transitions. [2022-11-23 15:40:14,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-23 15:40:14,326 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.325) internal successors, (93), 40 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-23 15:40:14,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:14,328 INFO L225 Difference]: With dead ends: 507 [2022-11-23 15:40:14,329 INFO L226 Difference]: Without dead ends: 492 [2022-11-23 15:40:14,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2563 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1260, Invalid=4902, Unknown=0, NotChecked=0, Total=6162 [2022-11-23 15:40:14,331 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 311 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:14,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 85 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:40:14,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-11-23 15:40:14,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 384. [2022-11-23 15:40:14,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 382 states have (on average 1.2225130890052356) internal successors, (467), 383 states have internal predecessors, (467), 0 states have call successors, (0), 0 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 15:40:14,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 467 transitions. [2022-11-23 15:40:14,410 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 467 transitions. Word has length 31 [2022-11-23 15:40:14,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:14,410 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 467 transitions. [2022-11-23 15:40:14,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.325) internal successors, (93), 40 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:14,411 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 467 transitions. [2022-11-23 15:40:14,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 15:40:14,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:14,411 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 15:40:14,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 15:40:14,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:14,617 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:40:14,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:14,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1287940505, now seen corresponding path program 1 times [2022-11-23 15:40:14,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:14,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613069] [2022-11-23 15:40:14,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:14,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:14,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:14,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613069] [2022-11-23 15:40:14,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613069] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:40:14,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719122208] [2022-11-23 15:40:14,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:14,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:14,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:40:14,829 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:40:14,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 15:40:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:14,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 15:40:14,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:40:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:15,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:40:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:15,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719122208] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:40:15,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [747625661] [2022-11-23 15:40:15,449 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:40:15,449 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:40:15,450 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:40:15,450 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:40:15,450 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:40:15,819 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:40:16,895 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9845#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_f_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 |ULTIMATE.start_f_~k#1|) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:40:16,896 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:40:16,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:40:16,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-11-23 15:40:16,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445464237] [2022-11-23 15:40:16,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:40:16,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-23 15:40:16,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:16,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-23 15:40:16,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=2175, Unknown=0, NotChecked=0, Total=2550 [2022-11-23 15:40:16,898 INFO L87 Difference]: Start difference. First operand 384 states and 467 transitions. Second operand has 41 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 15:40:17,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:17,945 INFO L93 Difference]: Finished difference Result 622 states and 747 transitions. [2022-11-23 15:40:17,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-23 15:40:17,945 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-23 15:40:17,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:17,948 INFO L225 Difference]: With dead ends: 622 [2022-11-23 15:40:17,948 INFO L226 Difference]: Without dead ends: 609 [2022-11-23 15:40:17,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2588 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1115, Invalid=5205, Unknown=0, NotChecked=0, Total=6320 [2022-11-23 15:40:17,951 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 292 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:17,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 74 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:40:17,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-11-23 15:40:18,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 449. [2022-11-23 15:40:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 447 states have (on average 1.2192393736017897) internal successors, (545), 448 states have internal predecessors, (545), 0 states have call successors, (0), 0 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 15:40:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 545 transitions. [2022-11-23 15:40:18,042 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 545 transitions. Word has length 34 [2022-11-23 15:40:18,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:18,042 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 545 transitions. [2022-11-23 15:40:18,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 15:40:18,043 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 545 transitions. [2022-11-23 15:40:18,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 15:40:18,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:18,044 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:40:18,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 15:40:18,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:18,250 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:40:18,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:18,250 INFO L85 PathProgramCache]: Analyzing trace with hash -871514643, now seen corresponding path program 1 times [2022-11-23 15:40:18,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:18,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373749134] [2022-11-23 15:40:18,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:18,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:18,612 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:18,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:18,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373749134] [2022-11-23 15:40:18,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373749134] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:40:18,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641749673] [2022-11-23 15:40:18,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:18,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:18,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:40:18,618 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:40:18,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 15:40:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:18,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-23 15:40:18,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:40:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:19,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:40:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:19,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641749673] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:40:19,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [272698214] [2022-11-23 15:40:19,626 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:40:19,626 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:40:19,626 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:40:19,627 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:40:19,627 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:40:20,089 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:40:21,528 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11863#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:40:21,529 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:40:21,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:40:21,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2022-11-23 15:40:21,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094389574] [2022-11-23 15:40:21,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:40:21,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-23 15:40:21,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:21,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-23 15:40:21,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=3853, Unknown=0, NotChecked=0, Total=4556 [2022-11-23 15:40:21,532 INFO L87 Difference]: Start difference. First operand 449 states and 545 transitions. Second operand has 59 states, 58 states have (on average 2.3275862068965516) internal successors, (135), 58 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 15:40:23,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:23,281 INFO L93 Difference]: Finished difference Result 986 states and 1170 transitions. [2022-11-23 15:40:23,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-23 15:40:23,282 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.3275862068965516) internal successors, (135), 58 states have internal predecessors, (135), 0 states have call successors, (0), 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 45 [2022-11-23 15:40:23,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:23,285 INFO L225 Difference]: With dead ends: 986 [2022-11-23 15:40:23,285 INFO L226 Difference]: Without dead ends: 967 [2022-11-23 15:40:23,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 75 SyntacticMatches, 11 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5529 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2389, Invalid=9821, Unknown=0, NotChecked=0, Total=12210 [2022-11-23 15:40:23,290 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 564 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:23,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 101 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:40:23,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2022-11-23 15:40:23,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 715. [2022-11-23 15:40:23,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 713 states have (on average 1.2033660589060309) internal successors, (858), 714 states have internal predecessors, (858), 0 states have call successors, (0), 0 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 15:40:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 858 transitions. [2022-11-23 15:40:23,451 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 858 transitions. Word has length 45 [2022-11-23 15:40:23,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:23,451 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 858 transitions. [2022-11-23 15:40:23,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.3275862068965516) internal successors, (135), 58 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 15:40:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 858 transitions. [2022-11-23 15:40:23,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-23 15:40:23,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:23,453 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-23 15:40:23,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 15:40:23,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:23,657 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:40:23,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:23,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1643921960, now seen corresponding path program 2 times [2022-11-23 15:40:23,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:23,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598116955] [2022-11-23 15:40:23,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:23,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:24,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:24,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598116955] [2022-11-23 15:40:24,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598116955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:40:24,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963844464] [2022-11-23 15:40:24,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:40:24,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:24,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:40:24,013 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:40:24,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 15:40:24,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 15:40:24,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:40:24,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-23 15:40:24,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:40:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 59 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 15:40:24,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:40:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 59 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 15:40:24,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963844464] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:40:24,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1693348811] [2022-11-23 15:40:24,220 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:40:24,220 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:40:24,220 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:40:24,220 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:40:24,221 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:40:24,585 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:40:25,874 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14845#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_f_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 |ULTIMATE.start_f_~k#1|) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:40:25,874 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:40:25,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:40:25,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6, 6] total 25 [2022-11-23 15:40:25,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283018837] [2022-11-23 15:40:25,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:40:25,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 15:40:25,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:25,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 15:40:25,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 15:40:25,877 INFO L87 Difference]: Start difference. First operand 715 states and 858 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:26,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:26,890 INFO L93 Difference]: Finished difference Result 1210 states and 1462 transitions. [2022-11-23 15:40:26,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-23 15:40:26,891 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-11-23 15:40:26,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:26,893 INFO L225 Difference]: With dead ends: 1210 [2022-11-23 15:40:26,893 INFO L226 Difference]: Without dead ends: 506 [2022-11-23 15:40:26,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 122 SyntacticMatches, 8 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 981 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=524, Invalid=3136, Unknown=0, NotChecked=0, Total=3660 [2022-11-23 15:40:26,901 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 172 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:26,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 90 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:40:26,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-11-23 15:40:27,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 495. [2022-11-23 15:40:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 493 states have (on average 1.0953346855983772) internal successors, (540), 494 states have internal predecessors, (540), 0 states have call successors, (0), 0 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 15:40:27,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 540 transitions. [2022-11-23 15:40:27,011 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 540 transitions. Word has length 46 [2022-11-23 15:40:27,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:27,012 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 540 transitions. [2022-11-23 15:40:27,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:27,012 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 540 transitions. [2022-11-23 15:40:27,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-23 15:40:27,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:27,014 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2022-11-23 15:40:27,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-23 15:40:27,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-23 15:40:27,220 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:40:27,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:27,220 INFO L85 PathProgramCache]: Analyzing trace with hash -555767703, now seen corresponding path program 1 times [2022-11-23 15:40:27,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:27,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223557192] [2022-11-23 15:40:27,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:27,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:27,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:27,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223557192] [2022-11-23 15:40:27,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223557192] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:40:27,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303465322] [2022-11-23 15:40:27,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:27,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:27,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:40:27,573 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:40:27,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-23 15:40:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:27,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-23 15:40:27,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:40:28,064 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:28,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:40:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:28,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303465322] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:40:28,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1643230455] [2022-11-23 15:40:28,557 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:40:28,557 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:40:28,557 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:40:28,557 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:40:28,558 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:40:29,030 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:40:30,306 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17768#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:40:30,306 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:40:30,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:40:30,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2022-11-23 15:40:30,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867398814] [2022-11-23 15:40:30,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:40:30,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-23 15:40:30,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:30,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-23 15:40:30,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=3853, Unknown=0, NotChecked=0, Total=4556 [2022-11-23 15:40:30,309 INFO L87 Difference]: Start difference. First operand 495 states and 540 transitions. Second operand has 59 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 58 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 15:40:32,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:32,039 INFO L93 Difference]: Finished difference Result 589 states and 640 transitions. [2022-11-23 15:40:32,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-23 15:40:32,040 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 58 states have internal predecessors, (147), 0 states have call successors, (0), 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 49 [2022-11-23 15:40:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:32,042 INFO L225 Difference]: With dead ends: 589 [2022-11-23 15:40:32,042 INFO L226 Difference]: Without dead ends: 568 [2022-11-23 15:40:32,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 91 SyntacticMatches, 7 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5543 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2370, Invalid=10740, Unknown=0, NotChecked=0, Total=13110 [2022-11-23 15:40:32,045 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 476 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:32,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 83 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:40:32,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-11-23 15:40:32,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 496. [2022-11-23 15:40:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 494 states have (on average 1.082995951417004) internal successors, (535), 495 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 15:40:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 535 transitions. [2022-11-23 15:40:32,155 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 535 transitions. Word has length 49 [2022-11-23 15:40:32,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:32,156 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 535 transitions. [2022-11-23 15:40:32,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 58 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 15:40:32,156 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 535 transitions. [2022-11-23 15:40:32,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-23 15:40:32,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:32,158 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:40:32,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-23 15:40:32,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-23 15:40:32,361 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:40:32,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:32,362 INFO L85 PathProgramCache]: Analyzing trace with hash 287389543, now seen corresponding path program 1 times [2022-11-23 15:40:32,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:32,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345857317] [2022-11-23 15:40:32,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:32,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:32,758 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:40:32,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:32,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345857317] [2022-11-23 15:40:32,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345857317] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:40:32,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042537752] [2022-11-23 15:40:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:32,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:32,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:40:32,761 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:40:32,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-23 15:40:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:32,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 15:40:32,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:40:32,914 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:40:32,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:40:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:40:33,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042537752] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:40:33,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1558519846] [2022-11-23 15:40:33,503 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-23 15:40:33,503 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:40:33,503 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:40:33,504 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:40:33,504 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:40:33,688 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:40:34,757 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19780#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (< 2147483646 |ULTIMATE.start_f_#t~post1#1|) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 |ULTIMATE.start_f_~i~0#1|) (<= |ULTIMATE.start_f_~k#1| 2) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:40:34,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:40:34,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:40:34,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 44 [2022-11-23 15:40:34,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302438955] [2022-11-23 15:40:34,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:40:34,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-23 15:40:34,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:34,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-23 15:40:34,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=691, Invalid=2389, Unknown=0, NotChecked=0, Total=3080 [2022-11-23 15:40:34,760 INFO L87 Difference]: Start difference. First operand 496 states and 535 transitions. Second operand has 46 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 45 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 15:40:35,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:35,745 INFO L93 Difference]: Finished difference Result 1015 states and 1132 transitions. [2022-11-23 15:40:35,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-23 15:40:35,746 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 45 states have internal predecessors, (102), 0 states have call successors, (0), 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 51 [2022-11-23 15:40:35,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:35,749 INFO L225 Difference]: With dead ends: 1015 [2022-11-23 15:40:35,750 INFO L226 Difference]: Without dead ends: 1014 [2022-11-23 15:40:35,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1698 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1473, Invalid=4533, Unknown=0, NotChecked=0, Total=6006 [2022-11-23 15:40:35,752 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 618 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:35,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 279 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:40:35,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2022-11-23 15:40:35,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 792. [2022-11-23 15:40:35,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 790 states have (on average 1.1151898734177215) internal successors, (881), 791 states have internal predecessors, (881), 0 states have call successors, (0), 0 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 15:40:35,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 881 transitions. [2022-11-23 15:40:35,912 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 881 transitions. Word has length 51 [2022-11-23 15:40:35,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:35,912 INFO L495 AbstractCegarLoop]: Abstraction has 792 states and 881 transitions. [2022-11-23 15:40:35,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 45 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 15:40:35,913 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 881 transitions. [2022-11-23 15:40:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-23 15:40:35,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:35,915 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 15:40:35,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-23 15:40:36,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:36,121 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:40:36,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:36,122 INFO L85 PathProgramCache]: Analyzing trace with hash 801247959, now seen corresponding path program 2 times [2022-11-23 15:40:36,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:36,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464853122] [2022-11-23 15:40:36,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:36,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:36,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:36,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464853122] [2022-11-23 15:40:36,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464853122] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:40:36,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166743228] [2022-11-23 15:40:36,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:40:36,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:36,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:40:36,705 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:40:36,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-23 15:40:36,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-23 15:40:36,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:40:36,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-23 15:40:36,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:40:37,498 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:37,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:40:38,291 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:38,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166743228] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:40:38,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1126170223] [2022-11-23 15:40:38,293 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:40:38,293 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:40:38,293 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:40:38,293 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:40:38,294 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:40:38,761 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:40:40,613 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22878#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:40:40,613 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:40:40,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:40:40,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 81 [2022-11-23 15:40:40,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10108405] [2022-11-23 15:40:40,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:40:40,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-11-23 15:40:40,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:40,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-11-23 15:40:40,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1303, Invalid=7069, Unknown=0, NotChecked=0, Total=8372 [2022-11-23 15:40:40,616 INFO L87 Difference]: Start difference. First operand 792 states and 881 transitions. Second operand has 83 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 15:40:43,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:43,113 INFO L93 Difference]: Finished difference Result 1019 states and 1135 transitions. [2022-11-23 15:40:43,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-11-23 15:40:43,113 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 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 63 [2022-11-23 15:40:43,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:43,117 INFO L225 Difference]: With dead ends: 1019 [2022-11-23 15:40:43,118 INFO L226 Difference]: Without dead ends: 996 [2022-11-23 15:40:43,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 109 SyntacticMatches, 15 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10678 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4533, Invalid=18117, Unknown=0, NotChecked=0, Total=22650 [2022-11-23 15:40:43,121 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 751 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:43,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 122 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:40:43,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2022-11-23 15:40:43,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 848. [2022-11-23 15:40:43,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 846 states have (on average 1.1028368794326242) internal successors, (933), 847 states have internal predecessors, (933), 0 states have call successors, (0), 0 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 15:40:43,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 933 transitions. [2022-11-23 15:40:43,317 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 933 transitions. Word has length 63 [2022-11-23 15:40:43,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:43,318 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 933 transitions. [2022-11-23 15:40:43,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 15:40:43,319 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 933 transitions. [2022-11-23 15:40:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-23 15:40:43,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:43,321 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:40:43,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-23 15:40:43,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-23 15:40:43,526 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:40:43,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:43,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1886645309, now seen corresponding path program 5 times [2022-11-23 15:40:43,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:43,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149394463] [2022-11-23 15:40:43,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:43,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:44,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:44,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149394463] [2022-11-23 15:40:44,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149394463] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:40:44,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711395606] [2022-11-23 15:40:44,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:40:44,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:44,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:40:44,614 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:40:44,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-23 15:40:44,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2022-11-23 15:40:44,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:40:44,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-23 15:40:44,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:40:45,940 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:45,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:40:47,633 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:47,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711395606] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:40:47,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2022322090] [2022-11-23 15:40:47,635 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:40:47,635 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:40:47,635 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:40:47,635 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:40:47,636 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:40:47,746 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:40:49,100 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26274#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|))' at error location [2022-11-23 15:40:49,100 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:40:49,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:40:49,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 117 [2022-11-23 15:40:49,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476529911] [2022-11-23 15:40:49,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:40:49,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-11-23 15:40:49,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:49,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-11-23 15:40:49,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3401, Invalid=13369, Unknown=0, NotChecked=0, Total=16770 [2022-11-23 15:40:49,105 INFO L87 Difference]: Start difference. First operand 848 states and 933 transitions. Second operand has 119 states, 118 states have (on average 2.110169491525424) internal successors, (249), 118 states have internal predecessors, (249), 0 states have call successors, (0), 0 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 15:40:52,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:52,914 INFO L93 Difference]: Finished difference Result 1278 states and 1413 transitions. [2022-11-23 15:40:52,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-11-23 15:40:52,915 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 118 states have (on average 2.110169491525424) internal successors, (249), 118 states have internal predecessors, (249), 0 states have call successors, (0), 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 83 [2022-11-23 15:40:52,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:52,923 INFO L225 Difference]: With dead ends: 1278 [2022-11-23 15:40:52,923 INFO L226 Difference]: Without dead ends: 1235 [2022-11-23 15:40:52,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17452 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=10130, Invalid=32512, Unknown=0, NotChecked=0, Total=42642 [2022-11-23 15:40:52,927 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1220 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:52,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 166 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 15:40:52,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-11-23 15:40:53,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1106. [2022-11-23 15:40:53,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1104 states have (on average 1.1014492753623188) internal successors, (1216), 1105 states have internal predecessors, (1216), 0 states have call successors, (0), 0 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 15:40:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1216 transitions. [2022-11-23 15:40:53,137 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1216 transitions. Word has length 83 [2022-11-23 15:40:53,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:53,137 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1216 transitions. [2022-11-23 15:40:53,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 118 states have (on average 2.110169491525424) internal successors, (249), 118 states have internal predecessors, (249), 0 states have call successors, (0), 0 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 15:40:53,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1216 transitions. [2022-11-23 15:40:53,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 15:40:53,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:53,140 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 7, 7, 7, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2022-11-23 15:40:53,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-23 15:40:53,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:53,345 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:40:53,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:53,346 INFO L85 PathProgramCache]: Analyzing trace with hash -465360484, now seen corresponding path program 3 times [2022-11-23 15:40:53,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:53,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785592838] [2022-11-23 15:40:53,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:53,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:54,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:54,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785592838] [2022-11-23 15:40:54,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785592838] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:40:54,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428282516] [2022-11-23 15:40:54,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:40:54,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:40:54,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:40:54,301 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:40:54,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-23 15:40:54,361 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:40:54,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:40:54,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-23 15:40:54,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:40:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:55,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:40:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:56,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428282516] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:40:56,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1282584421] [2022-11-23 15:40:56,834 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:40:56,834 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:40:56,835 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:40:56,835 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:40:56,835 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:40:57,249 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:40:59,722 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '30445#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:40:59,722 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:40:59,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:40:59,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 111 [2022-11-23 15:40:59,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874320100] [2022-11-23 15:40:59,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:40:59,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-11-23 15:40:59,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:59,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-11-23 15:40:59,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2337, Invalid=12425, Unknown=0, NotChecked=0, Total=14762 [2022-11-23 15:40:59,725 INFO L87 Difference]: Start difference. First operand 1106 states and 1216 transitions. Second operand has 113 states, 112 states have (on average 2.2767857142857144) internal successors, (255), 112 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:41:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:03,767 INFO L93 Difference]: Finished difference Result 1577 states and 1725 transitions. [2022-11-23 15:41:03,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-11-23 15:41:03,768 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 2.2767857142857144) internal successors, (255), 112 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-11-23 15:41:03,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:03,771 INFO L225 Difference]: With dead ends: 1577 [2022-11-23 15:41:03,771 INFO L226 Difference]: Without dead ends: 1546 [2022-11-23 15:41:03,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 150 SyntacticMatches, 20 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19968 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=8458, Invalid=33362, Unknown=0, NotChecked=0, Total=41820 [2022-11-23 15:41:03,774 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 850 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:03,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 148 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 15:41:03,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2022-11-23 15:41:04,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1180. [2022-11-23 15:41:04,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1178 states have (on average 1.0942275042444822) internal successors, (1289), 1179 states have internal predecessors, (1289), 0 states have call successors, (0), 0 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 15:41:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1289 transitions. [2022-11-23 15:41:04,045 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1289 transitions. Word has length 85 [2022-11-23 15:41:04,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:04,046 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1289 transitions. [2022-11-23 15:41:04,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 2.2767857142857144) internal successors, (255), 112 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:41:04,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1289 transitions. [2022-11-23 15:41:04,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-23 15:41:04,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:04,048 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1] [2022-11-23 15:41:04,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-23 15:41:04,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-23 15:41:04,254 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:41:04,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:04,254 INFO L85 PathProgramCache]: Analyzing trace with hash -613439449, now seen corresponding path program 3 times [2022-11-23 15:41:04,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:04,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218154654] [2022-11-23 15:41:04,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:04,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:05,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:05,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218154654] [2022-11-23 15:41:05,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218154654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:41:05,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422161980] [2022-11-23 15:41:05,439 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:41:05,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:05,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:41:05,440 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:41:05,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-23 15:41:05,531 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:41:05,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:41:05,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-23 15:41:05,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:41:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:06,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:41:08,483 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:08,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422161980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:41:08,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1071599140] [2022-11-23 15:41:08,485 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:41:08,485 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:41:08,486 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:41:08,486 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:41:08,486 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:41:08,859 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:41:11,027 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '35258#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_f_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 |ULTIMATE.start_f_~k#1|) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:41:11,028 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:41:11,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:41:11,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 123 [2022-11-23 15:41:11,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690239781] [2022-11-23 15:41:11,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:41:11,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-11-23 15:41:11,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:11,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-11-23 15:41:11,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2931, Invalid=15159, Unknown=0, NotChecked=0, Total=18090 [2022-11-23 15:41:11,030 INFO L87 Difference]: Start difference. First operand 1180 states and 1289 transitions. Second operand has 125 states, 124 states have (on average 2.370967741935484) internal successors, (294), 124 states have internal predecessors, (294), 0 states have call successors, (0), 0 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 15:41:15,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:15,799 INFO L93 Difference]: Finished difference Result 1464 states and 1583 transitions. [2022-11-23 15:41:15,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-11-23 15:41:15,799 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 124 states have (on average 2.370967741935484) internal successors, (294), 124 states have internal predecessors, (294), 0 states have call successors, (0), 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 98 [2022-11-23 15:41:15,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:15,802 INFO L225 Difference]: With dead ends: 1464 [2022-11-23 15:41:15,802 INFO L226 Difference]: Without dead ends: 1425 [2022-11-23 15:41:15,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 185 SyntacticMatches, 15 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24285 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=9889, Invalid=43703, Unknown=0, NotChecked=0, Total=53592 [2022-11-23 15:41:15,805 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1066 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:15,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 170 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 15:41:15,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2022-11-23 15:41:16,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1180. [2022-11-23 15:41:16,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1178 states have (on average 1.0831918505942275) internal successors, (1276), 1179 states have internal predecessors, (1276), 0 states have call successors, (0), 0 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 15:41:16,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1276 transitions. [2022-11-23 15:41:16,077 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1276 transitions. Word has length 98 [2022-11-23 15:41:16,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:16,078 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1276 transitions. [2022-11-23 15:41:16,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 124 states have (on average 2.370967741935484) internal successors, (294), 124 states have internal predecessors, (294), 0 states have call successors, (0), 0 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 15:41:16,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1276 transitions. [2022-11-23 15:41:16,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-23 15:41:16,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:16,080 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:41:16,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-23 15:41:16,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-23 15:41:16,285 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:41:16,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:16,286 INFO L85 PathProgramCache]: Analyzing trace with hash -67056725, now seen corresponding path program 2 times [2022-11-23 15:41:16,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:16,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085978119] [2022-11-23 15:41:16,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:16,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:41:17,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:17,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085978119] [2022-11-23 15:41:17,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085978119] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:41:17,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579224547] [2022-11-23 15:41:17,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:41:17,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:17,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:41:17,556 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:41:17,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-23 15:41:17,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 15:41:17,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:41:17,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:41:17,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:41:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 947 trivial. 0 not checked. [2022-11-23 15:41:17,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:41:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 947 trivial. 0 not checked. [2022-11-23 15:41:17,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579224547] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:41:17,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1667528056] [2022-11-23 15:41:17,892 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-23 15:41:17,892 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:41:17,892 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:41:17,893 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:41:17,893 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:41:18,064 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:41:19,284 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '39862#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (< 2147483646 |ULTIMATE.start_f_#t~post1#1|) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 |ULTIMATE.start_f_~i~0#1|) (<= |ULTIMATE.start_f_~k#1| 2) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:41:19,284 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:41:19,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:41:19,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 2, 2] total 48 [2022-11-23 15:41:19,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688804013] [2022-11-23 15:41:19,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:41:19,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-23 15:41:19,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:19,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-23 15:41:19,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=2760, Unknown=0, NotChecked=0, Total=3540 [2022-11-23 15:41:19,287 INFO L87 Difference]: Start difference. First operand 1180 states and 1276 transitions. Second operand has 50 states, 49 states have (on average 2.326530612244898) internal successors, (114), 49 states have internal predecessors, (114), 0 states have call successors, (0), 0 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 15:41:21,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:21,108 INFO L93 Difference]: Finished difference Result 1423 states and 1526 transitions. [2022-11-23 15:41:21,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-23 15:41:21,108 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.326530612244898) internal successors, (114), 49 states have internal predecessors, (114), 0 states have call successors, (0), 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 99 [2022-11-23 15:41:21,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:21,111 INFO L225 Difference]: With dead ends: 1423 [2022-11-23 15:41:21,111 INFO L226 Difference]: Without dead ends: 1422 [2022-11-23 15:41:21,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2846 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2694, Invalid=8648, Unknown=0, NotChecked=0, Total=11342 [2022-11-23 15:41:21,113 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 861 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:21,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 270 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:41:21,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2022-11-23 15:41:21,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 628. [2022-11-23 15:41:21,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 1.0494417862838916) internal successors, (658), 627 states have internal predecessors, (658), 0 states have call successors, (0), 0 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 15:41:21,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 658 transitions. [2022-11-23 15:41:21,359 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 658 transitions. Word has length 99 [2022-11-23 15:41:21,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:21,359 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 658 transitions. [2022-11-23 15:41:21,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.326530612244898) internal successors, (114), 49 states have internal predecessors, (114), 0 states have call successors, (0), 0 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 15:41:21,360 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 658 transitions. [2022-11-23 15:41:21,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-23 15:41:21,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:21,361 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 11, 9, 9, 9, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2022-11-23 15:41:21,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-23 15:41:21,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-23 15:41:21,567 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:41:21,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:21,567 INFO L85 PathProgramCache]: Analyzing trace with hash 750645948, now seen corresponding path program 4 times [2022-11-23 15:41:21,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:21,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834334230] [2022-11-23 15:41:21,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:21,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:23,012 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:23,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:23,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834334230] [2022-11-23 15:41:23,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834334230] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:41:23,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388879570] [2022-11-23 15:41:23,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:41:23,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:23,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:41:23,014 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:41:23,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-23 15:41:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:23,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-23 15:41:23,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:41:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:24,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:41:26,953 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:26,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388879570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:41:26,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [303632534] [2022-11-23 15:41:26,954 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:41:26,954 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:41:26,954 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:41:26,955 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:41:26,955 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:41:27,322 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:41:30,562 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '43717#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:41:30,563 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:41:30,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:41:30,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 147 [2022-11-23 15:41:30,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044902618] [2022-11-23 15:41:30,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:41:30,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2022-11-23 15:41:30,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:30,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2022-11-23 15:41:30,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3997, Invalid=20809, Unknown=0, NotChecked=0, Total=24806 [2022-11-23 15:41:30,566 INFO L87 Difference]: Start difference. First operand 628 states and 658 transitions. Second operand has 149 states, 148 states have (on average 2.25) internal successors, (333), 148 states have internal predecessors, (333), 0 states have call successors, (0), 0 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 15:41:36,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:41:36,809 INFO L93 Difference]: Finished difference Result 1482 states and 1544 transitions. [2022-11-23 15:41:36,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-11-23 15:41:36,810 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 148 states have (on average 2.25) internal successors, (333), 148 states have internal predecessors, (333), 0 states have call successors, (0), 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 111 [2022-11-23 15:41:36,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:41:36,812 INFO L225 Difference]: With dead ends: 1482 [2022-11-23 15:41:36,812 INFO L226 Difference]: Without dead ends: 1445 [2022-11-23 15:41:36,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 198 SyntacticMatches, 26 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34757 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=14784, Invalid=57308, Unknown=0, NotChecked=0, Total=72092 [2022-11-23 15:41:36,818 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1648 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:41:36,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 171 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 15:41:36,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2022-11-23 15:41:37,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 628. [2022-11-23 15:41:37,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 1.0494417862838916) internal successors, (658), 627 states have internal predecessors, (658), 0 states have call successors, (0), 0 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 15:41:37,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 658 transitions. [2022-11-23 15:41:37,062 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 658 transitions. Word has length 111 [2022-11-23 15:41:37,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:41:37,062 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 658 transitions. [2022-11-23 15:41:37,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 148 states have (on average 2.25) internal successors, (333), 148 states have internal predecessors, (333), 0 states have call successors, (0), 0 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 15:41:37,063 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 658 transitions. [2022-11-23 15:41:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-23 15:41:37,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:41:37,065 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 15, 11, 11, 11, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1] [2022-11-23 15:41:37,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-23 15:41:37,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:37,271 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:41:37,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:37,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1279741495, now seen corresponding path program 5 times [2022-11-23 15:41:37,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:37,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601156873] [2022-11-23 15:41:37,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:37,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:39,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:39,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:39,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601156873] [2022-11-23 15:41:39,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601156873] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:41:39,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648179117] [2022-11-23 15:41:39,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:41:39,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:39,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:41:39,746 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:41:39,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-23 15:41:39,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2022-11-23 15:41:39,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:41:39,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-23 15:41:39,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:41:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:42,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:41:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:45,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648179117] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:41:45,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [754570647] [2022-11-23 15:41:45,855 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:41:45,855 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:41:45,855 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:41:45,855 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:41:45,855 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:41:46,245 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:41:50,669 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '48023#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:41:50,670 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:41:50,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:41:50,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 189 [2022-11-23 15:41:50,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398782291] [2022-11-23 15:41:50,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:41:50,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2022-11-23 15:41:50,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:50,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2022-11-23 15:41:50,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6523, Invalid=33277, Unknown=0, NotChecked=0, Total=39800 [2022-11-23 15:41:50,676 INFO L87 Difference]: Start difference. First operand 628 states and 658 transitions. Second operand has 191 states, 190 states have (on average 2.2263157894736842) internal successors, (423), 190 states have internal predecessors, (423), 0 states have call successors, (0), 0 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 15:42:00,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:00,650 INFO L93 Difference]: Finished difference Result 1764 states and 1836 transitions. [2022-11-23 15:42:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2022-11-23 15:42:00,651 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 190 states have (on average 2.2263157894736842) internal successors, (423), 190 states have internal predecessors, (423), 0 states have call successors, (0), 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 141 [2022-11-23 15:42:00,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:00,657 INFO L225 Difference]: With dead ends: 1764 [2022-11-23 15:42:00,657 INFO L226 Difference]: Without dead ends: 1717 [2022-11-23 15:42:00,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 253 SyntacticMatches, 33 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56990 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=24399, Invalid=92907, Unknown=0, NotChecked=0, Total=117306 [2022-11-23 15:42:00,662 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1906 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1906 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:00,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1906 Valid, 222 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 15:42:00,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2022-11-23 15:42:00,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 676. [2022-11-23 15:42:00,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 1.045925925925926) internal successors, (706), 675 states have internal predecessors, (706), 0 states have call successors, (0), 0 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 15:42:00,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 706 transitions. [2022-11-23 15:42:00,987 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 706 transitions. Word has length 141 [2022-11-23 15:42:00,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:00,988 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 706 transitions. [2022-11-23 15:42:00,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 190 states have (on average 2.2263157894736842) internal successors, (423), 190 states have internal predecessors, (423), 0 states have call successors, (0), 0 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 15:42:00,988 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 706 transitions. [2022-11-23 15:42:00,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-23 15:42:00,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:00,990 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 13, 13, 13, 12, 12, 12, 11, 11, 2, 1, 1, 1, 1, 1] [2022-11-23 15:42:00,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:01,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:01,201 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:42:01,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:01,202 INFO L85 PathProgramCache]: Analyzing trace with hash 959199986, now seen corresponding path program 6 times [2022-11-23 15:42:01,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:01,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992408326] [2022-11-23 15:42:01,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:01,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 0 proven. 1492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:04,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:04,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992408326] [2022-11-23 15:42:04,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992408326] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:04,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538115743] [2022-11-23 15:42:04,446 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:42:04,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:04,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:04,447 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:04,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-23 15:42:04,738 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:42:04,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:42:04,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-23 15:42:04,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 0 proven. 1492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:08,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:12,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 0 proven. 1492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:12,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538115743] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:12,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1106487780] [2022-11-23 15:42:12,805 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:42:12,805 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:12,805 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:12,805 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:12,805 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:13,155 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:18,406 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '53090#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:42:18,406 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:18,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:18,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 219 [2022-11-23 15:42:18,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611225966] [2022-11-23 15:42:18,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:18,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 221 states [2022-11-23 15:42:18,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:18,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2022-11-23 15:42:18,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8661, Invalid=44009, Unknown=0, NotChecked=0, Total=52670 [2022-11-23 15:42:18,412 INFO L87 Difference]: Start difference. First operand 676 states and 706 transitions. Second operand has 221 states, 220 states have (on average 2.359090909090909) internal successors, (519), 220 states have internal predecessors, (519), 0 states have call successors, (0), 0 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 15:42:33,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:33,374 INFO L93 Difference]: Finished difference Result 1566 states and 1663 transitions. [2022-11-23 15:42:33,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2022-11-23 15:42:33,374 INFO L78 Accepts]: Start accepts. Automaton has has 221 states, 220 states have (on average 2.359090909090909) internal successors, (519), 220 states have internal predecessors, (519), 0 states have call successors, (0), 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 173 [2022-11-23 15:42:33,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:33,377 INFO L225 Difference]: With dead ends: 1566 [2022-11-23 15:42:33,377 INFO L226 Difference]: Without dead ends: 1495 [2022-11-23 15:42:33,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 324 SyntacticMatches, 38 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83689 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=33027, Invalid=140445, Unknown=0, NotChecked=0, Total=173472 [2022-11-23 15:42:33,385 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2380 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2380 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:33,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2380 Valid, 262 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 15:42:33,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2022-11-23 15:42:33,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 821. [2022-11-23 15:42:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 820 states have (on average 1.0621951219512196) internal successors, (871), 820 states have internal predecessors, (871), 0 states have call successors, (0), 0 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 15:42:33,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 871 transitions. [2022-11-23 15:42:33,892 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 871 transitions. Word has length 173 [2022-11-23 15:42:33,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:33,892 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 871 transitions. [2022-11-23 15:42:33,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 221 states, 220 states have (on average 2.359090909090909) internal successors, (519), 220 states have internal predecessors, (519), 0 states have call successors, (0), 0 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 15:42:33,893 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 871 transitions. [2022-11-23 15:42:33,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-23 15:42:33,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:33,897 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:42:33,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:34,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:34,103 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:42:34,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:34,103 INFO L85 PathProgramCache]: Analyzing trace with hash -534520635, now seen corresponding path program 6 times [2022-11-23 15:42:34,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:34,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829672961] [2022-11-23 15:42:34,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:34,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 0 proven. 3487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:38,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:38,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829672961] [2022-11-23 15:42:38,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829672961] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:38,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522252674] [2022-11-23 15:42:38,425 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:42:38,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:38,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:38,426 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:38,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-23 15:42:38,514 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:42:38,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:42:38,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-23 15:42:38,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:42,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 0 proven. 3487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:42,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 0 proven. 3487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:50,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522252674] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:50,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1233333811] [2022-11-23 15:42:50,174 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:42:50,174 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:50,174 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:50,175 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:50,175 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:50,293 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:52,097 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '58224#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|))' at error location [2022-11-23 15:42:52,098 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:52,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:52,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 261 [2022-11-23 15:42:52,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476584391] [2022-11-23 15:42:52,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:52,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 263 states [2022-11-23 15:42:52,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:52,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 263 interpolants. [2022-11-23 15:42:52,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15881, Invalid=58921, Unknown=0, NotChecked=0, Total=74802 [2022-11-23 15:42:52,107 INFO L87 Difference]: Start difference. First operand 821 states and 871 transitions. Second operand has 263 states, 262 states have (on average 2.049618320610687) internal successors, (537), 262 states have internal predecessors, (537), 0 states have call successors, (0), 0 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 15:43:09,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:43:09,060 INFO L93 Difference]: Finished difference Result 2114 states and 2250 transitions. [2022-11-23 15:43:09,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2022-11-23 15:43:09,062 INFO L78 Accepts]: Start accepts. Automaton has has 263 states, 262 states have (on average 2.049618320610687) internal successors, (537), 262 states have internal predecessors, (537), 0 states have call successors, (0), 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 179 [2022-11-23 15:43:09,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:43:09,065 INFO L225 Difference]: With dead ends: 2114 [2022-11-23 15:43:09,065 INFO L226 Difference]: Without dead ends: 2023 [2022-11-23 15:43:09,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 348 SyntacticMatches, 2 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80792 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=49166, Invalid=150196, Unknown=0, NotChecked=0, Total=199362 [2022-11-23 15:43:09,073 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3095 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3095 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:43:09,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3095 Valid, 311 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 15:43:09,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2022-11-23 15:43:09,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 1301. [2022-11-23 15:43:09,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 1.0392307692307692) internal successors, (1351), 1300 states have internal predecessors, (1351), 0 states have call successors, (0), 0 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 15:43:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1351 transitions. [2022-11-23 15:43:09,876 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1351 transitions. Word has length 179 [2022-11-23 15:43:09,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:43:09,876 INFO L495 AbstractCegarLoop]: Abstraction has 1301 states and 1351 transitions. [2022-11-23 15:43:09,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 263 states, 262 states have (on average 2.049618320610687) internal successors, (537), 262 states have internal predecessors, (537), 0 states have call successors, (0), 0 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 15:43:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1351 transitions. [2022-11-23 15:43:09,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-23 15:43:09,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:43:09,879 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 22, 13, 13, 13, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1] [2022-11-23 15:43:09,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-11-23 15:43:10,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-23 15:43:10,089 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:43:10,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:43:10,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2059285315, now seen corresponding path program 7 times [2022-11-23 15:43:10,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:43:10,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482220997] [2022-11-23 15:43:10,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:43:10,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:43:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 0 proven. 1907 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:43:13,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:43:13,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482220997] [2022-11-23 15:43:13,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482220997] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:43:13,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618717323] [2022-11-23 15:43:13,619 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:43:13,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:43:13,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:43:13,621 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:43:13,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-23 15:43:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:13,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-23 15:43:13,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:43:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 0 proven. 1907 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:43:17,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:43:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 0 proven. 1907 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:43:23,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618717323] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:43:23,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1053962068] [2022-11-23 15:43:23,675 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:43:23,675 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:43:23,675 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:43:23,675 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:43:23,676 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:43:24,013 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:43:30,671 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '64895#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:43:30,671 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:43:30,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:43:30,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 249 [2022-11-23 15:43:30,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223479128] [2022-11-23 15:43:30,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:43:30,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 251 states [2022-11-23 15:43:30,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:43:30,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2022-11-23 15:43:30,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11311, Invalid=56029, Unknown=0, NotChecked=0, Total=67340 [2022-11-23 15:43:30,677 INFO L87 Difference]: Start difference. First operand 1301 states and 1351 transitions. Second operand has 251 states, 250 states have (on average 2.196) internal successors, (549), 250 states have internal predecessors, (549), 0 states have call successors, (0), 0 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 15:43:48,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:43:48,537 INFO L93 Difference]: Finished difference Result 3276 states and 3384 transitions. [2022-11-23 15:43:48,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2022-11-23 15:43:48,537 INFO L78 Accepts]: Start accepts. Automaton has has 251 states, 250 states have (on average 2.196) internal successors, (549), 250 states have internal predecessors, (549), 0 states have call successors, (0), 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 183 [2022-11-23 15:43:48,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:43:48,542 INFO L225 Difference]: With dead ends: 3276 [2022-11-23 15:43:48,542 INFO L226 Difference]: Without dead ends: 3213 [2022-11-23 15:43:48,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 329 SyntacticMatches, 43 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97621 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=42347, Invalid=157015, Unknown=0, NotChecked=0, Total=199362 [2022-11-23 15:43:48,550 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2511 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2511 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:43:48,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2511 Valid, 293 Invalid, 1896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 15:43:48,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2022-11-23 15:43:49,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 1301. [2022-11-23 15:43:49,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 1.0392307692307692) internal successors, (1351), 1300 states have internal predecessors, (1351), 0 states have call successors, (0), 0 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 15:43:49,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1351 transitions. [2022-11-23 15:43:49,633 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1351 transitions. Word has length 183 [2022-11-23 15:43:49,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:43:49,633 INFO L495 AbstractCegarLoop]: Abstraction has 1301 states and 1351 transitions. [2022-11-23 15:43:49,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 251 states, 250 states have (on average 2.196) internal successors, (549), 250 states have internal predecessors, (549), 0 states have call successors, (0), 0 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 15:43:49,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1351 transitions. [2022-11-23 15:43:49,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-23 15:43:49,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:43:49,636 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 28, 15, 15, 15, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1] [2022-11-23 15:43:49,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-23 15:43:49,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-23 15:43:49,842 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:43:49,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:43:49,842 INFO L85 PathProgramCache]: Analyzing trace with hash -935096204, now seen corresponding path program 8 times [2022-11-23 15:43:49,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:43:49,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77291275] [2022-11-23 15:43:49,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:43:49,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:43:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2906 backedges. 0 proven. 2906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:43:54,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:43:54,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77291275] [2022-11-23 15:43:54,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77291275] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:43:54,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172660752] [2022-11-23 15:43:54,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:43:54,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:43:54,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:43:54,926 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:43:54,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-23 15:43:55,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2022-11-23 15:43:55,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:43:55,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-23 15:43:55,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:44:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2906 backedges. 0 proven. 2906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:44:00,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:44:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2906 backedges. 0 proven. 2906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:44:09,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172660752] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:44:09,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1787714090] [2022-11-23 15:44:09,429 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:44:09,429 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:44:09,429 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:44:09,430 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:44:09,430 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:44:09,851 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:44:18,875 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '73528#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:44:18,876 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:44:18,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:44:18,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 303 [2022-11-23 15:44:18,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263284893] [2022-11-23 15:44:18,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:44:18,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 305 states [2022-11-23 15:44:18,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:44:18,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 305 interpolants. [2022-11-23 15:44:18,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16737, Invalid=81545, Unknown=0, NotChecked=0, Total=98282 [2022-11-23 15:44:18,887 INFO L87 Difference]: Start difference. First operand 1301 states and 1351 transitions. Second operand has 305 states, 304 states have (on average 2.1809210526315788) internal successors, (663), 304 states have internal predecessors, (663), 0 states have call successors, (0), 0 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 15:44:45,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:44:45,633 INFO L93 Difference]: Finished difference Result 3416 states and 3538 transitions. [2022-11-23 15:44:45,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 330 states. [2022-11-23 15:44:45,633 INFO L78 Accepts]: Start accepts. Automaton has has 305 states, 304 states have (on average 2.1809210526315788) internal successors, (663), 304 states have internal predecessors, (663), 0 states have call successors, (0), 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 221 [2022-11-23 15:44:45,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:44:45,640 INFO L225 Difference]: With dead ends: 3416 [2022-11-23 15:44:45,640 INFO L226 Difference]: Without dead ends: 3339 [2022-11-23 15:44:45,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 398 SyntacticMatches, 52 SemanticMatches, 539 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143570 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=62714, Invalid=229426, Unknown=0, NotChecked=0, Total=292140 [2022-11-23 15:44:45,651 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3417 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3417 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:44:45,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3417 Valid, 347 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 15:44:45,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2022-11-23 15:44:47,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 1301. [2022-11-23 15:44:47,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 1.0392307692307692) internal successors, (1351), 1300 states have internal predecessors, (1351), 0 states have call successors, (0), 0 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 15:44:47,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1351 transitions. [2022-11-23 15:44:47,185 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1351 transitions. Word has length 221 [2022-11-23 15:44:47,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:44:47,185 INFO L495 AbstractCegarLoop]: Abstraction has 1301 states and 1351 transitions. [2022-11-23 15:44:47,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 305 states, 304 states have (on average 2.1809210526315788) internal successors, (663), 304 states have internal predecessors, (663), 0 states have call successors, (0), 0 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 15:44:47,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1351 transitions. [2022-11-23 15:44:47,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-23 15:44:47,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:44:47,189 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 25, 25, 25, 16, 16, 16, 15, 15, 10, 1, 1, 1, 1, 1] [2022-11-23 15:44:47,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-23 15:44:47,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:44:47,395 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:44:47,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:44:47,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1661649798, now seen corresponding path program 9 times [2022-11-23 15:44:47,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:44:47,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766668635] [2022-11-23 15:44:47,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:47,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:44:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 3356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:44:53,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:44:53,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766668635] [2022-11-23 15:44:53,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766668635] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:44:53,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769503603] [2022-11-23 15:44:53,506 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:44:53,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:44:53,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:44:53,507 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:44:53,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-23 15:44:53,637 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:44:53,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:44:53,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 115 conjunts are in the unsatisfiable core [2022-11-23 15:44:53,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 3356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:45:00,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:45:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 3356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:45:11,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769503603] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:45:11,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [55788879] [2022-11-23 15:45:11,201 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:45:11,201 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:45:11,201 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:45:11,202 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:45:11,202 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:45:11,529 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:45:21,995 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '82687#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:45:21,995 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:45:21,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:45:21,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113, 113] total 339 [2022-11-23 15:45:21,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794619970] [2022-11-23 15:45:21,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:45:21,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 341 states [2022-11-23 15:45:21,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:21,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 341 interpolants. [2022-11-23 15:45:22,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19933, Invalid=102217, Unknown=0, NotChecked=0, Total=122150 [2022-11-23 15:45:22,005 INFO L87 Difference]: Start difference. First operand 1301 states and 1351 transitions. Second operand has 341 states, 340 states have (on average 2.302941176470588) internal successors, (783), 340 states have internal predecessors, (783), 0 states have call successors, (0), 0 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 15:46:00,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:46:00,134 INFO L93 Difference]: Finished difference Result 3366 states and 3500 transitions. [2022-11-23 15:46:00,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 398 states. [2022-11-23 15:46:00,135 INFO L78 Accepts]: Start accepts. Automaton has has 341 states, 340 states have (on average 2.302941176470588) internal successors, (783), 340 states have internal predecessors, (783), 0 states have call successors, (0), 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 261 [2022-11-23 15:46:00,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:46:00,144 INFO L225 Difference]: With dead ends: 3366 [2022-11-23 15:46:00,144 INFO L226 Difference]: Without dead ends: 3277 [2022-11-23 15:46:00,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1177 GetRequests, 488 SyntacticMatches, 58 SemanticMatches, 631 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194326 ImplicationChecksByTransitivity, 50.2s TimeCoverageRelationStatistics Valid=78449, Invalid=321607, Unknown=0, NotChecked=0, Total=400056 [2022-11-23 15:46:00,168 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3979 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 2208 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3979 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 2964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 2208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:46:00,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3979 Valid, 396 Invalid, 2964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 2208 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-23 15:46:00,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2022-11-23 15:46:01,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 1421. [2022-11-23 15:46:01,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1420 states have (on average 1.0471830985915493) internal successors, (1487), 1420 states have internal predecessors, (1487), 0 states have call successors, (0), 0 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 15:46:01,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1487 transitions. [2022-11-23 15:46:01,752 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1487 transitions. Word has length 261 [2022-11-23 15:46:01,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:46:01,752 INFO L495 AbstractCegarLoop]: Abstraction has 1421 states and 1487 transitions. [2022-11-23 15:46:01,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 341 states, 340 states have (on average 2.302941176470588) internal successors, (783), 340 states have internal predecessors, (783), 0 states have call successors, (0), 0 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 15:46:01,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1487 transitions. [2022-11-23 15:46:01,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-11-23 15:46:01,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:46:01,754 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 44, 17, 17, 17, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1] [2022-11-23 15:46:01,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-23 15:46:01,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:46:01,955 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:46:01,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:46:01,955 INFO L85 PathProgramCache]: Analyzing trace with hash -134555149, now seen corresponding path program 10 times [2022-11-23 15:46:01,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:46:01,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757010001] [2022-11-23 15:46:01,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:01,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:46:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:11,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5989 backedges. 0 proven. 5989 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:46:11,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:46:11,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757010001] [2022-11-23 15:46:11,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757010001] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:46:11,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375955189] [2022-11-23 15:46:11,177 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:46:11,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:46:11,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:46:11,181 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:46:11,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-23 15:46:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:11,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 141 conjunts are in the unsatisfiable core [2022-11-23 15:46:11,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:46:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5989 backedges. 0 proven. 5989 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:46:21,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:46:37,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5989 backedges. 0 proven. 5989 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:46:37,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375955189] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:46:37,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [380464933] [2022-11-23 15:46:37,937 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:46:37,937 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:46:37,938 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:46:37,938 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:46:37,938 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:46:38,355 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:46:54,815 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '92350#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:46:54,816 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:46:54,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:46:54,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139, 139] total 417 [2022-11-23 15:46:54,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012579123] [2022-11-23 15:46:54,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:46:54,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 419 states [2022-11-23 15:46:54,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:46:54,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 419 interpolants. [2022-11-23 15:46:54,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32295, Invalid=150461, Unknown=0, NotChecked=0, Total=182756 [2022-11-23 15:46:54,831 INFO L87 Difference]: Start difference. First operand 1421 states and 1487 transitions. Second operand has 419 states, 418 states have (on average 2.145933014354067) internal successors, (897), 418 states have internal predecessors, (897), 0 states have call successors, (0), 0 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 15:47:53,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:53,239 INFO L93 Difference]: Finished difference Result 4703 states and 4875 transitions. [2022-11-23 15:47:53,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 448 states. [2022-11-23 15:47:53,240 INFO L78 Accepts]: Start accepts. Automaton has has 419 states, 418 states have (on average 2.145933014354067) internal successors, (897), 418 states have internal predecessors, (897), 0 states have call successors, (0), 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 299 [2022-11-23 15:47:53,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:53,249 INFO L225 Difference]: With dead ends: 4703 [2022-11-23 15:47:53,249 INFO L226 Difference]: Without dead ends: 4592 [2022-11-23 15:47:53,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1341 GetRequests, 537 SyntacticMatches, 71 SemanticMatches, 733 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266775 ImplicationChecksByTransitivity, 72.2s TimeCoverageRelationStatistics Valid=119133, Invalid=420357, Unknown=0, NotChecked=0, Total=539490 [2022-11-23 15:47:53,271 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4696 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 2608 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4696 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 3132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 2608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:47:53,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4696 Valid, 474 Invalid, 3132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 2608 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-23 15:47:53,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4592 states. [2022-11-23 15:47:55,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4592 to 1645. [2022-11-23 15:47:55,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 1.0407542579075426) internal successors, (1711), 1644 states have internal predecessors, (1711), 0 states have call successors, (0), 0 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 15:47:55,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 1711 transitions. [2022-11-23 15:47:55,887 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 1711 transitions. Word has length 299 [2022-11-23 15:47:55,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:55,888 INFO L495 AbstractCegarLoop]: Abstraction has 1645 states and 1711 transitions. [2022-11-23 15:47:55,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 419 states, 418 states have (on average 2.145933014354067) internal successors, (897), 418 states have internal predecessors, (897), 0 states have call successors, (0), 0 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 15:47:55,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 1711 transitions. [2022-11-23 15:47:55,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-23 15:47:55,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:55,892 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 52, 19, 19, 19, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1] [2022-11-23 15:47:55,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-23 15:47:56,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-23 15:47:56,101 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:47:56,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:56,102 INFO L85 PathProgramCache]: Analyzing trace with hash 368883290, now seen corresponding path program 11 times [2022-11-23 15:47:56,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:47:56,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526457956] [2022-11-23 15:47:56,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:56,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:47:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:08,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8174 backedges. 0 proven. 8174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:48:08,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:48:08,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526457956] [2022-11-23 15:48:08,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526457956] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:48:08,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019543499] [2022-11-23 15:48:08,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:48:08,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:48:08,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:48:08,915 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:48:08,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-23 15:48:09,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2022-11-23 15:48:09,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:48:09,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 163 conjunts are in the unsatisfiable core [2022-11-23 15:48:09,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:48:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 8174 backedges. 0 proven. 8174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:48:22,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:48:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8174 backedges. 0 proven. 8174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:48:44,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019543499] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:48:44,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1021421613] [2022-11-23 15:48:44,834 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:48:44,834 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:48:44,834 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:48:44,834 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:48:44,834 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:48:45,191 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:49:05,557 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '104619#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:49:05,557 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:49:05,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:49:05,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161, 161] total 483 [2022-11-23 15:49:05,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018984127] [2022-11-23 15:49:05,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:49:05,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 485 states [2022-11-23 15:49:05,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:49:05,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 485 interpolants. [2022-11-23 15:49:05,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43405, Invalid=200137, Unknown=0, NotChecked=0, Total=243542 [2022-11-23 15:49:05,574 INFO L87 Difference]: Start difference. First operand 1645 states and 1711 transitions. Second operand has 485 states, 484 states have (on average 2.1384297520661155) internal successors, (1035), 484 states have internal predecessors, (1035), 0 states have call successors, (0), 0 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 15:50:28,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:50:28,880 INFO L93 Difference]: Finished difference Result 4617 states and 4807 transitions. [2022-11-23 15:50:28,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 518 states. [2022-11-23 15:50:28,881 INFO L78 Accepts]: Start accepts. Automaton has has 485 states, 484 states have (on average 2.1384297520661155) internal successors, (1035), 484 states have internal predecessors, (1035), 0 states have call successors, (0), 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 345 [2022-11-23 15:50:28,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:50:28,888 INFO L225 Difference]: With dead ends: 4617 [2022-11-23 15:50:28,888 INFO L226 Difference]: Without dead ends: 4488 [2022-11-23 15:50:28,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1549 GetRequests, 620 SyntacticMatches, 82 SemanticMatches, 847 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356523 ImplicationChecksByTransitivity, 94.3s TimeCoverageRelationStatistics Valid=159905, Invalid=560047, Unknown=0, NotChecked=0, Total=719952 [2022-11-23 15:50:28,917 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6232 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 745 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6232 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 3761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 745 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:50:28,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6232 Valid, 549 Invalid, 3761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [745 Valid, 3016 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-23 15:50:28,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4488 states. [2022-11-23 15:50:31,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4488 to 1843. [2022-11-23 15:50:31,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1842 states have (on average 1.0363735070575462) internal successors, (1909), 1842 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:50:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 1909 transitions. [2022-11-23 15:50:31,846 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 1909 transitions. Word has length 345 [2022-11-23 15:50:31,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:50:31,847 INFO L495 AbstractCegarLoop]: Abstraction has 1843 states and 1909 transitions. [2022-11-23 15:50:31,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 485 states, 484 states have (on average 2.1384297520661155) internal successors, (1035), 484 states have internal predecessors, (1035), 0 states have call successors, (0), 0 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 15:50:31,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 1909 transitions. [2022-11-23 15:50:31,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-11-23 15:50:31,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:50:31,851 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 39, 39, 39, 22, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1] [2022-11-23 15:50:31,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-23 15:50:32,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-23 15:50:32,057 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:50:32,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:50:32,058 INFO L85 PathProgramCache]: Analyzing trace with hash 848766854, now seen corresponding path program 12 times [2022-11-23 15:50:32,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:50:32,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926716568] [2022-11-23 15:50:32,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:32,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:50:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6704 backedges. 0 proven. 6704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:50:45,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:50:45,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926716568] [2022-11-23 15:50:45,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926716568] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:50:45,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992370065] [2022-11-23 15:50:45,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:50:45,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:50:45,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:50:45,182 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:50:45,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-23 15:50:45,378 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:50:45,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:50:45,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 163 conjunts are in the unsatisfiable core [2022-11-23 15:50:45,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:50:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6704 backedges. 0 proven. 6704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:50:58,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:51:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 6704 backedges. 0 proven. 6704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:51:20,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992370065] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:51:20,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1186492264] [2022-11-23 15:51:20,134 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 15:51:20,134 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:51:20,134 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:51:20,134 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:51:20,134 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:51:20,504 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:51:39,921 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '117286#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-23 15:51:39,921 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:51:39,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:51:39,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161, 161] total 483 [2022-11-23 15:51:39,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155382355] [2022-11-23 15:51:39,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:51:39,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 485 states [2022-11-23 15:51:39,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:51:39,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 485 interpolants. [2022-11-23 15:51:39,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39885, Invalid=203657, Unknown=0, NotChecked=0, Total=243542 [2022-11-23 15:51:39,938 INFO L87 Difference]: Start difference. First operand 1843 states and 1909 transitions. Second operand has 485 states, 484 states have (on average 2.262396694214876) internal successors, (1095), 484 states have internal predecessors, (1095), 0 states have call successors, (0), 0 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 15:53:10,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:53:10,659 INFO L93 Difference]: Finished difference Result 4331 states and 4513 transitions. [2022-11-23 15:53:10,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 558 states. [2022-11-23 15:53:10,660 INFO L78 Accepts]: Start accepts. Automaton has has 485 states, 484 states have (on average 2.262396694214876) internal successors, (1095), 484 states have internal predecessors, (1095), 0 states have call successors, (0), 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 365 [2022-11-23 15:53:10,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:53:10,665 INFO L225 Difference]: With dead ends: 4331 [2022-11-23 15:53:10,665 INFO L226 Difference]: Without dead ends: 4210 [2022-11-23 15:53:10,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1649 GetRequests, 680 SyntacticMatches, 82 SemanticMatches, 887 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385397 ImplicationChecksByTransitivity, 97.1s TimeCoverageRelationStatistics Valid=158645, Invalid=630787, Unknown=0, NotChecked=0, Total=789432 [2022-11-23 15:53:10,696 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6190 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 3008 mSolverCounterSat, 1037 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6190 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 4045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1037 IncrementalHoareTripleChecker+Valid, 3008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:53:10,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6190 Valid, 544 Invalid, 4045 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1037 Valid, 3008 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-23 15:53:10,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2022-11-23 15:53:13,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 1963. [2022-11-23 15:53:13,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1963 states, 1962 states have (on average 1.0423037716615697) internal successors, (2045), 1962 states have internal predecessors, (2045), 0 states have call successors, (0), 0 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 15:53:13,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 2045 transitions. [2022-11-23 15:53:13,708 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 2045 transitions. Word has length 365 [2022-11-23 15:53:13,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:53:13,709 INFO L495 AbstractCegarLoop]: Abstraction has 1963 states and 2045 transitions. [2022-11-23 15:53:13,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 485 states, 484 states have (on average 2.262396694214876) internal successors, (1095), 484 states have internal predecessors, (1095), 0 states have call successors, (0), 0 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 15:53:13,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 2045 transitions. [2022-11-23 15:53:13,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-23 15:53:13,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:53:13,712 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 74, 21, 21, 21, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1] [2022-11-23 15:53:13,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-23 15:53:13,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc2c106-6293-46e4-90ce-a3e82cae81cb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-23 15:53:13,913 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:53:13,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:53:13,913 INFO L85 PathProgramCache]: Analyzing trace with hash 57323643, now seen corresponding path program 13 times [2022-11-23 15:53:13,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:53:13,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903226334] [2022-11-23 15:53:13,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:13,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:53:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat