./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF --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 47d7aa734a1bf75c79acf2b3acca3677f12d2522fb1fc624c15ccfe9b5a8438a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:46:38,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:46:38,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:46:38,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:46:38,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:46:38,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:46:38,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:46:38,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:46:38,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:46:38,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:46:38,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:46:38,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:46:38,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:46:38,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:46:38,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:46:38,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:46:38,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:46:38,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:46:38,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:46:38,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:46:38,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:46:38,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:46:38,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:46:38,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:46:38,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:46:38,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:46:38,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:46:38,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:46:38,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:46:38,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:46:38,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:46:38,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:46:38,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:46:38,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:46:38,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:46:38,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:46:38,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:46:38,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:46:38,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:46:38,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:46:38,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:46:38,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-12 23:46:38,674 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:46:38,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:46:38,676 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:46:38,676 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:46:38,676 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:46:38,677 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:46:38,677 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:46:38,677 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:46:38,684 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:46:38,684 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:46:38,686 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:46:38,686 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:46:38,686 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:46:38,686 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:46:38,687 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:46:38,687 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:46:38,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:46:38,688 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:46:38,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:46:38,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:46:38,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:46:38,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:46:38,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:46:38,690 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-12 23:46:38,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:46:38,690 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:46:38,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:46:38,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:46:38,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:46:38,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:46:38,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:46:38,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:46:38,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:46:38,694 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:46:38,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:46:38,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:46:38,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:46:38,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:46:38,696 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47d7aa734a1bf75c79acf2b3acca3677f12d2522fb1fc624c15ccfe9b5a8438a [2021-11-12 23:46:39,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:46:39,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:46:39,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:46:39,072 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:46:39,073 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:46:39,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c [2021-11-12 23:46:39,153 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/data/530044525/0129c536c8474d1eb2d2c894a88f7935/FLAG30a7d62b9 [2021-11-12 23:46:39,688 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:46:39,689 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c [2021-11-12 23:46:39,703 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/data/530044525/0129c536c8474d1eb2d2c894a88f7935/FLAG30a7d62b9 [2021-11-12 23:46:40,055 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/data/530044525/0129c536c8474d1eb2d2c894a88f7935 [2021-11-12 23:46:40,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:46:40,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:46:40,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:46:40,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:46:40,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:46:40,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:46:40" (1/1) ... [2021-11-12 23:46:40,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6447749c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:40, skipping insertion in model container [2021-11-12 23:46:40,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:46:40" (1/1) ... [2021-11-12 23:46:40,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:46:40,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:46:40,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:46:40,294 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:46:40,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:46:40,323 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:46:40,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:40 WrapperNode [2021-11-12 23:46:40,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:46:40,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:46:40,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:46:40,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:46:40,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:40" (1/1) ... [2021-11-12 23:46:40,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:40" (1/1) ... [2021-11-12 23:46:40,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:46:40,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:46:40,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:46:40,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:46:40,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:40" (1/1) ... [2021-11-12 23:46:40,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:40" (1/1) ... [2021-11-12 23:46:40,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:40" (1/1) ... [2021-11-12 23:46:40,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:40" (1/1) ... [2021-11-12 23:46:40,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:40" (1/1) ... [2021-11-12 23:46:40,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:40" (1/1) ... [2021-11-12 23:46:40,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:40" (1/1) ... [2021-11-12 23:46:40,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:46:40,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:46:40,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:46:40,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:46:40,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:40" (1/1) ... [2021-11-12 23:46:40,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:46:40,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:46:40,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:46:40,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:46:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:46:40,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:46:40,658 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:46:40,659 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:46:40,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:46:40 BoogieIcfgContainer [2021-11-12 23:46:40,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:46:40,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:46:40,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:46:40,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:46:40,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:46:40" (1/3) ... [2021-11-12 23:46:40,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a86752a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:46:40, skipping insertion in model container [2021-11-12 23:46:40,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:40" (2/3) ... [2021-11-12 23:46:40,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a86752a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:46:40, skipping insertion in model container [2021-11-12 23:46:40,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:46:40" (3/3) ... [2021-11-12 23:46:40,673 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random1d-2.c [2021-11-12 23:46:40,680 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:46:40,681 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-12 23:46:40,744 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:46:40,754 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:46:40,755 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-12 23:46:40,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:40,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:46:40,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:40,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:46:40,782 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:46:40,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:40,789 INFO L85 PathProgramCache]: Analyzing trace with hash 69427029, now seen corresponding path program 1 times [2021-11-12 23:46:40,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:46:40,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948307775] [2021-11-12 23:46:40,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:40,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:46:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:40,975 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:46:40,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948307775] [2021-11-12 23:46:40,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948307775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:40,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:46:40,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:46:40,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763094257] [2021-11-12 23:46:40,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:40,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:46:40,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:46:41,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:46:41,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:46:41,026 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:41,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:41,140 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-11-12 23:46:41,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:46:41,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-12 23:46:41,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:41,171 INFO L225 Difference]: With dead ends: 32 [2021-11-12 23:46:41,171 INFO L226 Difference]: Without dead ends: 26 [2021-11-12 23:46:41,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:46:41,181 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.77ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.49ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:41,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 23 Invalid, 23 Unknown, 0 Unchecked, 1.77ms Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 89.49ms Time] [2021-11-12 23:46:41,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-12 23:46:41,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2021-11-12 23:46:41,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 22 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) [2021-11-12 23:46:41,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-11-12 23:46:41,276 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 5 [2021-11-12 23:46:41,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:41,292 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-11-12 23:46:41,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:41,292 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-11-12 23:46:41,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 23:46:41,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:41,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 23:46:41,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:46:41,295 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:46:41,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:41,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2142729346, now seen corresponding path program 1 times [2021-11-12 23:46:41,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:46:41,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123505236] [2021-11-12 23:46:41,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:41,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:46:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:41,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:41,357 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:46:41,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123505236] [2021-11-12 23:46:41,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123505236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:41,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:46:41,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:46:41,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130455863] [2021-11-12 23:46:41,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:41,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:46:41,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:46:41,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:46:41,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:46:41,376 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2021-11-12 23:46:41,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:41,436 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2021-11-12 23:46:41,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:46:41,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2021-11-12 23:46:41,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:41,439 INFO L225 Difference]: With dead ends: 40 [2021-11-12 23:46:41,439 INFO L226 Difference]: Without dead ends: 38 [2021-11-12 23:46:41,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:46:41,443 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.17ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.03ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:41,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 18 Unknown, 0 Unchecked, 1.17ms Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 53.03ms Time] [2021-11-12 23:46:41,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-12 23:46:41,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-11-12 23:46:41,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 35 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:41,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2021-11-12 23:46:41,454 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 6 [2021-11-12 23:46:41,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:41,455 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2021-11-12 23:46:41,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2021-11-12 23:46:41,456 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2021-11-12 23:46:41,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 23:46:41,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:41,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:46:41,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:46:41,458 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:46:41,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:41,459 INFO L85 PathProgramCache]: Analyzing trace with hash -2000100226, now seen corresponding path program 1 times [2021-11-12 23:46:41,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:46:41,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546978793] [2021-11-12 23:46:41,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:41,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:46:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:41,496 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:46:41,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546978793] [2021-11-12 23:46:41,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546978793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:41,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:46:41,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:46:41,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483729559] [2021-11-12 23:46:41,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:41,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:46:41,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:46:41,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:46:41,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:46:41,500 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:41,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:41,523 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2021-11-12 23:46:41,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:46:41,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-12 23:46:41,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:41,527 INFO L225 Difference]: With dead ends: 42 [2021-11-12 23:46:41,527 INFO L226 Difference]: Without dead ends: 41 [2021-11-12 23:46:41,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:46:41,531 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.86ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:41,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 22 Invalid, 11 Unknown, 0 Unchecked, 0.86ms Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 16.00ms Time] [2021-11-12 23:46:41,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-12 23:46:41,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-11-12 23:46:41,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 38 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) [2021-11-12 23:46:41,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2021-11-12 23:46:41,543 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 7 [2021-11-12 23:46:41,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:41,543 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2021-11-12 23:46:41,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:41,544 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2021-11-12 23:46:41,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:46:41,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:41,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:46:41,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 23:46:41,546 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:46:41,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:41,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1873564800, now seen corresponding path program 1 times [2021-11-12 23:46:41,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:46:41,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380466823] [2021-11-12 23:46:41,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:41,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:46:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:41,609 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:46:41,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380466823] [2021-11-12 23:46:41,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380466823] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:41,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:46:41,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:46:41,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618285923] [2021-11-12 23:46:41,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:41,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:46:41,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:46:41,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:46:41,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:46:41,613 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:41,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:41,639 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2021-11-12 23:46:41,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:46:41,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 23:46:41,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:41,644 INFO L225 Difference]: With dead ends: 39 [2021-11-12 23:46:41,644 INFO L226 Difference]: Without dead ends: 38 [2021-11-12 23:46:41,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:46:41,648 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.23ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.01ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:41,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 3.23ms Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 14.01ms Time] [2021-11-12 23:46:41,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-12 23:46:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-11-12 23:46:41,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 37 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:41,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2021-11-12 23:46:41,663 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 8 [2021-11-12 23:46:41,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:41,664 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2021-11-12 23:46:41,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:41,664 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2021-11-12 23:46:41,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:46:41,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:41,665 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:46:41,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 23:46:41,666 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:46:41,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:41,670 INFO L85 PathProgramCache]: Analyzing trace with hash 2026065806, now seen corresponding path program 1 times [2021-11-12 23:46:41,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:46:41,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817528700] [2021-11-12 23:46:41,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:41,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:46:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:41,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:41,764 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:46:41,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817528700] [2021-11-12 23:46:41,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817528700] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:46:41,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460970061] [2021-11-12 23:46:41,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:41,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:46:41,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:46:41,768 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:46:41,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 23:46:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:41,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:46:41,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:41,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:41,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:42,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:42,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460970061] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:46:42,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1084643256] [2021-11-12 23:46:42,109 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:46:42,109 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:46:42,114 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:46:42,121 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:46:42,121 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:46:42,169 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:46:42,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:42,184 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-12 23:46:42,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:42,198 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-12 23:46:42,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-12 23:46:42,214 INFO L180 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size [2021-11-12 23:46:42,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:42,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,298 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size [2021-11-12 23:46:42,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-12 23:46:42,308 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-11-12 23:46:42,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 23:46:42,319 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:42,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:46:42,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,363 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-12 23:46:42,365 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:42,368 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-12 23:46:42,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:42,373 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:42,377 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 23:46:42,384 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-12 23:46:42,386 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:42,394 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-12 23:46:42,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:42,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,552 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size [2021-11-12 23:46:42,562 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:46:42,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:42,579 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 23:46:42,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-12 23:46:42,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:42,611 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:46:43,042 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:46:43,042 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:46:43,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-12 23:46:43,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691772277] [2021-11-12 23:46:43,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:46:43,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:46:43,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:46:43,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:46:43,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:46:43,046 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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) [2021-11-12 23:46:43,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:43,140 INFO L93 Difference]: Finished difference Result 97 states and 134 transitions. [2021-11-12 23:46:43,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:46:43,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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) Word has length 11 [2021-11-12 23:46:43,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:43,144 INFO L225 Difference]: With dead ends: 97 [2021-11-12 23:46:43,144 INFO L226 Difference]: Without dead ends: 95 [2021-11-12 23:46:43,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:46:43,146 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.12ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:43,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 37 Invalid, 52 Unknown, 0 Unchecked, 3.12ms Time], IncrementalHoareTripleChecker [24 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 70.42ms Time] [2021-11-12 23:46:43,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-12 23:46:43,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2021-11-12 23:46:43,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 77 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) [2021-11-12 23:46:43,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions. [2021-11-12 23:46:43,162 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 11 [2021-11-12 23:46:43,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:43,162 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 102 transitions. [2021-11-12 23:46:43,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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) [2021-11-12 23:46:43,163 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 102 transitions. [2021-11-12 23:46:43,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 23:46:43,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:43,164 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:46:43,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-12 23:46:43,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:46:43,392 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:46:43,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:43,392 INFO L85 PathProgramCache]: Analyzing trace with hash -974279381, now seen corresponding path program 1 times [2021-11-12 23:46:43,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:46:43,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434690778] [2021-11-12 23:46:43,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:43,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:46:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:43,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:46:43,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434690778] [2021-11-12 23:46:43,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434690778] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:46:43,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236072062] [2021-11-12 23:46:43,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:43,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:46:43,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:46:43,437 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:46:43,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-12 23:46:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:43,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:46:43,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:43,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:43,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:43,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236072062] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:46:43,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [676368478] [2021-11-12 23:46:43,653 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-12 23:46:43,653 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:46:43,654 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:46:43,654 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:46:43,654 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:46:43,664 INFO L180 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-11-12 23:46:43,666 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:43,668 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-12 23:46:43,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 23:46:43,671 INFO L180 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-11-12 23:46:43,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-12 23:46:43,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:43,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:43,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:43,690 INFO L180 QuantifierPusher]: treesize reduction 10, result has 86.7 percent of original size [2021-11-12 23:46:43,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 23:46:43,695 INFO L180 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-11-12 23:46:43,699 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:46:43,702 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.6 percent of original size [2021-11-12 23:46:43,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:46:43,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:43,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:43,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:43,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:43,722 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-12 23:46:43,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:43,725 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-12 23:46:43,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-12 23:46:43,728 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:46:43,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:46:43,733 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:43,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:43,739 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-12 23:46:43,741 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:43,744 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-12 23:46:43,745 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-12 23:46:43,749 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:46:43,750 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:46:43,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:43,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:43,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:43,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:43,762 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:46:43,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:46:43,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:46:43,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-12 23:46:43,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904977024] [2021-11-12 23:46:43,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:46:43,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:46:43,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:46:43,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:46:43,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:46:43,942 INFO L87 Difference]: Start difference. First operand 78 states and 102 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:44,002 INFO L93 Difference]: Finished difference Result 134 states and 185 transitions. [2021-11-12 23:46:44,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:46:44,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-12 23:46:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:44,007 INFO L225 Difference]: With dead ends: 134 [2021-11-12 23:46:44,007 INFO L226 Difference]: Without dead ends: 132 [2021-11-12 23:46:44,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:46:44,009 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 45 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.26ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.79ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:44,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 19 Invalid, 37 Unknown, 0 Unchecked, 1.26ms Time], IncrementalHoareTripleChecker [19 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 51.79ms Time] [2021-11-12 23:46:44,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-12 23:46:44,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 98. [2021-11-12 23:46:44,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 94 states have (on average 1.351063829787234) internal successors, (127), 97 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:44,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 127 transitions. [2021-11-12 23:46:44,037 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 127 transitions. Word has length 12 [2021-11-12 23:46:44,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:44,037 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 127 transitions. [2021-11-12 23:46:44,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:44,038 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 127 transitions. [2021-11-12 23:46:44,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:46:44,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:44,038 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-12 23:46:44,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-12 23:46:44,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-12 23:46:44,259 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:46:44,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:44,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1429056119, now seen corresponding path program 1 times [2021-11-12 23:46:44,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:46:44,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445491442] [2021-11-12 23:46:44,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:44,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:46:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:44,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:44,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:46:44,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445491442] [2021-11-12 23:46:44,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445491442] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:46:44,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437838712] [2021-11-12 23:46:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:44,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:46:44,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:46:44,307 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:46:44,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-12 23:46:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:44,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:46:44,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:44,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:44,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437838712] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:46:44,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1585244587] [2021-11-12 23:46:44,436 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:46:44,436 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:46:44,436 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:46:44,437 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:46:44,437 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:46:44,453 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:46:44,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:44,465 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-12 23:46:44,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 23:46:44,469 INFO L180 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-11-12 23:46:44,473 INFO L185 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size 13 [2021-11-12 23:46:44,475 INFO L180 QuantifierPusher]: treesize reduction 3, result has 90.6 percent of original size [2021-11-12 23:46:44,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:44,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,509 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size [2021-11-12 23:46:44,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-12 23:46:44,517 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-11-12 23:46:44,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 23:46:44,523 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:44,526 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:46:44,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,542 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-12 23:46:44,544 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:44,545 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-12 23:46:44,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:44,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:44,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 23:46:44,554 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-12 23:46:44,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:44,558 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-12 23:46:44,560 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:44,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:44,615 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size [2021-11-12 23:46:44,618 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:46:44,619 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:44,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 23:46:44,626 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-12 23:46:44,628 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:46:44,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:46:44,916 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:46:44,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-12 23:46:44,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702267884] [2021-11-12 23:46:44,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:46:44,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:46:44,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:46:44,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:46:44,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:46:44,918 INFO L87 Difference]: Start difference. First operand 98 states and 127 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 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) [2021-11-12 23:46:44,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:44,960 INFO L93 Difference]: Finished difference Result 206 states and 267 transitions. [2021-11-12 23:46:44,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:46:44,961 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 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) Word has length 13 [2021-11-12 23:46:44,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:44,963 INFO L225 Difference]: With dead ends: 206 [2021-11-12 23:46:44,963 INFO L226 Difference]: Without dead ends: 205 [2021-11-12 23:46:44,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:46:44,964 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.97ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:44,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 42 Invalid, 24 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 32.97ms Time] [2021-11-12 23:46:44,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-12 23:46:44,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2021-11-12 23:46:44,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 199 states have (on average 1.2412060301507537) internal successors, (247), 202 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:44,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 247 transitions. [2021-11-12 23:46:44,986 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 247 transitions. Word has length 13 [2021-11-12 23:46:44,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:44,986 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 247 transitions. [2021-11-12 23:46:44,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 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) [2021-11-12 23:46:44,987 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 247 transitions. [2021-11-12 23:46:44,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 23:46:44,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:44,988 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1] [2021-11-12 23:46:45,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:45,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:46:45,204 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:46:45,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:45,204 INFO L85 PathProgramCache]: Analyzing trace with hash -385077154, now seen corresponding path program 1 times [2021-11-12 23:46:45,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:46:45,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282196604] [2021-11-12 23:46:45,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:45,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:46:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:45,277 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:46:45,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282196604] [2021-11-12 23:46:45,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282196604] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:46:45,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739737346] [2021-11-12 23:46:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:45,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:46:45,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:46:45,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:46:45,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-12 23:46:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:45,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:46:45,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:45,384 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:45,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:45,454 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:45,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739737346] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:46:45,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2146662636] [2021-11-12 23:46:45,458 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:46:45,458 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:46:45,458 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:46:45,459 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:46:45,459 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:46:45,474 INFO L180 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-11-12 23:46:45,476 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:45,478 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-12 23:46:45,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 23:46:45,483 INFO L180 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-11-12 23:46:45,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-12 23:46:45,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:45,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:45,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:45,510 INFO L180 QuantifierPusher]: treesize reduction 10, result has 86.7 percent of original size [2021-11-12 23:46:45,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 23:46:45,514 INFO L180 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-11-12 23:46:45,519 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:46:45,527 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.6 percent of original size [2021-11-12 23:46:45,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:46:45,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:45,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:45,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:45,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:45,557 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-12 23:46:45,559 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:45,560 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-12 23:46:45,566 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-12 23:46:45,568 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:46:45,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:46:45,574 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-12 23:46:45,575 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:45,582 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-12 23:46:45,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-12 23:46:45,589 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:46:45,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:46:45,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:45,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:45,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:45,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:45,610 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:46:45,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:46:45,796 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:46:45,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-12 23:46:45,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745648890] [2021-11-12 23:46:45,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:46:45,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:46:45,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:46:45,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:46:45,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:46:45,798 INFO L87 Difference]: Start difference. First operand 203 states and 247 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 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) [2021-11-12 23:46:45,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:45,880 INFO L93 Difference]: Finished difference Result 398 states and 514 transitions. [2021-11-12 23:46:45,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:46:45,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 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) Word has length 18 [2021-11-12 23:46:45,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:45,884 INFO L225 Difference]: With dead ends: 398 [2021-11-12 23:46:45,884 INFO L226 Difference]: Without dead ends: 397 [2021-11-12 23:46:45,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:46:45,886 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.02ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.65ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:45,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 44 Invalid, 72 Unknown, 0 Unchecked, 1.02ms Time], IncrementalHoareTripleChecker [34 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 65.65ms Time] [2021-11-12 23:46:45,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-11-12 23:46:45,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 329. [2021-11-12 23:46:45,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 325 states have (on average 1.2769230769230768) internal successors, (415), 328 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:45,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 415 transitions. [2021-11-12 23:46:45,930 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 415 transitions. Word has length 18 [2021-11-12 23:46:45,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:45,931 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 415 transitions. [2021-11-12 23:46:45,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 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) [2021-11-12 23:46:45,931 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 415 transitions. [2021-11-12 23:46:45,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-12 23:46:45,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:45,941 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1] [2021-11-12 23:46:45,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:46,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:46:46,155 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:46:46,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:46,156 INFO L85 PathProgramCache]: Analyzing trace with hash 2043316153, now seen corresponding path program 2 times [2021-11-12 23:46:46,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:46:46,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729273347] [2021-11-12 23:46:46,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:46,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:46:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:46,226 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:46:46,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729273347] [2021-11-12 23:46:46,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729273347] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:46:46,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757551376] [2021-11-12 23:46:46,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:46:46,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:46:46,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:46:46,228 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:46:46,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-12 23:46:46,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-12 23:46:46,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:46:46,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:46:46,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:46,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:46,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757551376] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:46:46,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [516813511] [2021-11-12 23:46:46,464 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:46:46,464 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:46:46,465 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:46:46,465 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:46:46,465 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:46:46,472 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:46:46,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:46,477 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-12 23:46:46,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:46,481 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-12 23:46:46,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-12 23:46:46,489 INFO L180 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size [2021-11-12 23:46:46,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:46,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,503 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size [2021-11-12 23:46:46,505 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-12 23:46:46,507 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-11-12 23:46:46,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 23:46:46,512 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:46,516 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:46:46,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,531 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-12 23:46:46,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:46,537 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-12 23:46:46,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:46,542 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:46,544 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 23:46:46,547 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-12 23:46:46,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:46,552 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-12 23:46:46,554 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:46,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,592 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size [2021-11-12 23:46:46,594 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:46:46,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:46,599 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 23:46:46,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-12 23:46:46,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:46,612 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:46:46,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:46:46,896 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:46:46,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-11-12 23:46:46,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646770298] [2021-11-12 23:46:46,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:46:46,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:46:46,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:46:46,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:46:46,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-11-12 23:46:46,898 INFO L87 Difference]: Start difference. First operand 329 states and 415 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:47,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:47,024 INFO L93 Difference]: Finished difference Result 870 states and 1194 transitions. [2021-11-12 23:46:47,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:46:47,024 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 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 29 [2021-11-12 23:46:47,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:47,030 INFO L225 Difference]: With dead ends: 870 [2021-11-12 23:46:47,030 INFO L226 Difference]: Without dead ends: 868 [2021-11-12 23:46:47,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-11-12 23:46:47,032 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 83 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.70ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.06ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:47,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 76 Invalid, 104 Unknown, 0 Unchecked, 1.70ms Time], IncrementalHoareTripleChecker [52 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 95.06ms Time] [2021-11-12 23:46:47,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-11-12 23:46:47,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 572. [2021-11-12 23:46:47,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 568 states have (on average 1.2869718309859155) internal successors, (731), 571 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:47,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 731 transitions. [2021-11-12 23:46:47,058 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 731 transitions. Word has length 29 [2021-11-12 23:46:47,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:47,058 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 731 transitions. [2021-11-12 23:46:47,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 731 transitions. [2021-11-12 23:46:47,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-12 23:46:47,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:47,060 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1] [2021-11-12 23:46:47,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:47,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-11-12 23:46:47,279 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:46:47,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:47,279 INFO L85 PathProgramCache]: Analyzing trace with hash 826770402, now seen corresponding path program 2 times [2021-11-12 23:46:47,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:46:47,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003256388] [2021-11-12 23:46:47,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:47,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:46:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-12 23:46:47,310 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:46:47,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003256388] [2021-11-12 23:46:47,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003256388] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:46:47,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239581300] [2021-11-12 23:46:47,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:46:47,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:46:47,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:46:47,320 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:46:47,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-12 23:46:47,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-12 23:46:47,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:46:47,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:46:47,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-12 23:46:47,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:47,540 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-12 23:46:47,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239581300] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:46:47,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [665187922] [2021-11-12 23:46:47,543 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:46:47,543 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:46:47,544 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:46:47,544 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:46:47,544 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:46:47,556 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:46:47,559 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:47,565 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-12 23:46:47,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:47,569 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-12 23:46:47,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-12 23:46:47,573 INFO L180 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size [2021-11-12 23:46:47,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:47,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,592 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size [2021-11-12 23:46:47,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-12 23:46:47,599 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-11-12 23:46:47,602 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 23:46:47,604 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:47,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:46:47,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,624 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-12 23:46:47,627 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:47,630 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-12 23:46:47,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:47,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:47,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 23:46:47,639 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-12 23:46:47,641 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:47,644 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-12 23:46:47,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:47,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:47,711 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size [2021-11-12 23:46:47,714 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:46:47,715 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:47,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 23:46:47,720 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-12 23:46:47,726 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:46:48,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:46:48,022 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:46:48,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2021-11-12 23:46:48,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645443198] [2021-11-12 23:46:48,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:46:48,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:46:48,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:46:48,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:46:48,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:46:48,024 INFO L87 Difference]: Start difference. First operand 572 states and 731 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-11-12 23:46:48,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:48,054 INFO L93 Difference]: Finished difference Result 572 states and 731 transitions. [2021-11-12 23:46:48,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:46:48,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 31 [2021-11-12 23:46:48,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:48,059 INFO L225 Difference]: With dead ends: 572 [2021-11-12 23:46:48,059 INFO L226 Difference]: Without dead ends: 571 [2021-11-12 23:46:48,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:46:48,061 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.22ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.01ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:48,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 0.22ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 9.01ms Time] [2021-11-12 23:46:48,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-11-12 23:46:48,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 456. [2021-11-12 23:46:48,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 453 states have (on average 1.1898454746136866) internal successors, (539), 455 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 539 transitions. [2021-11-12 23:46:48,087 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 539 transitions. Word has length 31 [2021-11-12 23:46:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:48,087 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 539 transitions. [2021-11-12 23:46:48,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-11-12 23:46:48,088 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 539 transitions. [2021-11-12 23:46:48,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-12 23:46:48,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:48,089 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1] [2021-11-12 23:46:48,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:48,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-11-12 23:46:48,311 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:46:48,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:48,312 INFO L85 PathProgramCache]: Analyzing trace with hash 435226258, now seen corresponding path program 2 times [2021-11-12 23:46:48,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:46:48,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084306750] [2021-11-12 23:46:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:48,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:46:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:48,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:46:48,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084306750] [2021-11-12 23:46:48,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084306750] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:46:48,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201899085] [2021-11-12 23:46:48,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:46:48,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:46:48,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:46:48,428 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:46:48,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-12 23:46:48,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-12 23:46:48,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:46:48,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:46:48,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:48,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:48,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201899085] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:46:48,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1711171287] [2021-11-12 23:46:48,767 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:46:48,768 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:46:48,768 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:46:48,768 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:46:48,768 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:46:48,775 INFO L180 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-11-12 23:46:48,777 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:48,778 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-12 23:46:48,779 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 23:46:48,781 INFO L180 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-11-12 23:46:48,782 INFO L185 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-11-12 23:46:48,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:48,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:48,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:48,803 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.0 percent of original size [2021-11-12 23:46:48,805 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 23:46:48,807 INFO L180 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-11-12 23:46:48,809 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:46:48,811 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.6 percent of original size [2021-11-12 23:46:48,814 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:46:48,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:48,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:48,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:48,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:48,826 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-12 23:46:48,827 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:48,829 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-12 23:46:48,830 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-12 23:46:48,832 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:46:48,833 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:46:48,836 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-12 23:46:48,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:48,839 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-12 23:46:48,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-12 23:46:48,842 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:46:48,844 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:46:48,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:48,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:48,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:48,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:48,854 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:46:49,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:46:49,083 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:46:49,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-11-12 23:46:49,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722056361] [2021-11-12 23:46:49,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:46:49,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 23:46:49,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:46:49,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 23:46:49,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:46:49,085 INFO L87 Difference]: Start difference. First operand 456 states and 539 transitions. Second operand has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:49,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:49,269 INFO L93 Difference]: Finished difference Result 1648 states and 2019 transitions. [2021-11-12 23:46:49,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:46:49,269 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 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 42 [2021-11-12 23:46:49,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:49,279 INFO L225 Difference]: With dead ends: 1648 [2021-11-12 23:46:49,279 INFO L226 Difference]: Without dead ends: 1647 [2021-11-12 23:46:49,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 104 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:46:49,282 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 100 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.23ms SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.82ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:49,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 77 Invalid, 207 Unknown, 0 Unchecked, 2.23ms Time], IncrementalHoareTripleChecker [138 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 123.82ms Time] [2021-11-12 23:46:49,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-11-12 23:46:49,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 902. [2021-11-12 23:46:49,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 899 states have (on average 1.1802002224694104) internal successors, (1061), 901 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:49,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1061 transitions. [2021-11-12 23:46:49,326 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1061 transitions. Word has length 42 [2021-11-12 23:46:49,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:49,327 INFO L470 AbstractCegarLoop]: Abstraction has 902 states and 1061 transitions. [2021-11-12 23:46:49,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:49,327 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1061 transitions. [2021-11-12 23:46:49,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:46:49,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:49,331 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1] [2021-11-12 23:46:49,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-12 23:46:49,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-11-12 23:46:49,539 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:46:49,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:49,540 INFO L85 PathProgramCache]: Analyzing trace with hash 84797903, now seen corresponding path program 3 times [2021-11-12 23:46:49,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:46:49,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33499295] [2021-11-12 23:46:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:49,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:46:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:49,669 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:46:49,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33499295] [2021-11-12 23:46:49,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33499295] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:46:49,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424819090] [2021-11-12 23:46:49,670 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:46:49,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:46:49,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:46:49,675 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:46:49,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-12 23:46:49,714 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 23:46:49,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:46:49,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 23:46:49,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:49,848 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:49,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:50,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424819090] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:46:50,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [694671066] [2021-11-12 23:46:50,145 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:46:50,145 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:46:50,146 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:46:50,146 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:46:50,146 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:46:50,152 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:46:50,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:50,156 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-12 23:46:50,157 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 23:46:50,159 INFO L180 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-11-12 23:46:50,161 INFO L185 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size 13 [2021-11-12 23:46:50,163 INFO L180 QuantifierPusher]: treesize reduction 3, result has 90.6 percent of original size [2021-11-12 23:46:50,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:50,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,177 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size [2021-11-12 23:46:50,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-12 23:46:50,180 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-11-12 23:46:50,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 23:46:50,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:50,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:46:50,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,210 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-12 23:46:50,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:50,214 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-12 23:46:50,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:50,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:50,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 23:46:50,222 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-12 23:46:50,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:50,227 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-12 23:46:50,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:50,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,265 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size [2021-11-12 23:46:50,268 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:46:50,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:50,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 23:46:50,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-12 23:46:50,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:50,284 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:46:50,552 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:46:50,552 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:46:50,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-11-12 23:46:50,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162038946] [2021-11-12 23:46:50,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:46:50,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-12 23:46:50,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:46:50,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-12 23:46:50,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=682, Unknown=0, NotChecked=0, Total=992 [2021-11-12 23:46:50,555 INFO L87 Difference]: Start difference. First operand 902 states and 1061 transitions. Second operand has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:50,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:50,883 INFO L93 Difference]: Finished difference Result 4198 states and 5263 transitions. [2021-11-12 23:46:50,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-12 23:46:50,884 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 0 states have call successors, (0), 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 65 [2021-11-12 23:46:50,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:50,905 INFO L225 Difference]: With dead ends: 4198 [2021-11-12 23:46:50,906 INFO L226 Difference]: Without dead ends: 4196 [2021-11-12 23:46:50,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=310, Invalid=682, Unknown=0, NotChecked=0, Total=992 [2021-11-12 23:46:50,910 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 157 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.50ms SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 168.20ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:50,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 120 Invalid, 266 Unknown, 0 Unchecked, 2.50ms Time], IncrementalHoareTripleChecker [158 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 168.20ms Time] [2021-11-12 23:46:50,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2021-11-12 23:46:51,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 1944. [2021-11-12 23:46:51,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1944 states, 1941 states have (on average 1.1597114889232354) internal successors, (2251), 1943 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:51,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2251 transitions. [2021-11-12 23:46:51,019 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2251 transitions. Word has length 65 [2021-11-12 23:46:51,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:51,020 INFO L470 AbstractCegarLoop]: Abstraction has 1944 states and 2251 transitions. [2021-11-12 23:46:51,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2251 transitions. [2021-11-12 23:46:51,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-12 23:46:51,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:51,022 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 1, 1, 1] [2021-11-12 23:46:51,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:51,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:46:51,235 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:46:51,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:51,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1620549370, now seen corresponding path program 3 times [2021-11-12 23:46:51,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:46:51,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459127246] [2021-11-12 23:46:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:51,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:46:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:51,486 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:46:51,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459127246] [2021-11-12 23:46:51,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459127246] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:46:51,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683883441] [2021-11-12 23:46:51,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:46:51,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:46:51,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:46:51,488 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:46:51,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-12 23:46:51,546 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 23:46:51,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:46:51,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 23:46:51,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:51,780 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:51,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:52,299 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:52,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683883441] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:46:52,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [673105841] [2021-11-12 23:46:52,301 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:46:52,301 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:46:52,301 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:46:52,301 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:46:52,301 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:46:52,306 INFO L180 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-11-12 23:46:52,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:52,309 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-12 23:46:52,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 23:46:52,311 INFO L180 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-11-12 23:46:52,312 INFO L185 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-11-12 23:46:52,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:52,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:52,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:52,324 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.0 percent of original size [2021-11-12 23:46:52,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 23:46:52,327 INFO L180 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-11-12 23:46:52,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:46:52,331 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.6 percent of original size [2021-11-12 23:46:52,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:46:52,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:52,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:52,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:52,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:52,349 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-12 23:46:52,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:52,352 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-12 23:46:52,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-12 23:46:52,354 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:46:52,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:46:52,357 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-12 23:46:52,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:52,360 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-12 23:46:52,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-12 23:46:52,363 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:46:52,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:46:52,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:52,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:52,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:52,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:52,374 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:46:52,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:46:52,782 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:46:52,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2021-11-12 23:46:52,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980417647] [2021-11-12 23:46:52,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:46:52,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-12 23:46:52,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:46:52,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-12 23:46:52,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=522, Invalid=960, Unknown=0, NotChecked=0, Total=1482 [2021-11-12 23:46:52,784 INFO L87 Difference]: Start difference. First operand 1944 states and 2251 transitions. Second operand has 32 states, 31 states have (on average 5.774193548387097) internal successors, (179), 32 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:53,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:53,349 INFO L93 Difference]: Finished difference Result 9842 states and 11725 transitions. [2021-11-12 23:46:53,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-12 23:46:53,349 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.774193548387097) internal successors, (179), 32 states have internal predecessors, (179), 0 states have call successors, (0), 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 90 [2021-11-12 23:46:53,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:53,400 INFO L225 Difference]: With dead ends: 9842 [2021-11-12 23:46:53,400 INFO L226 Difference]: Without dead ends: 9841 [2021-11-12 23:46:53,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 232 SyntacticMatches, 15 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=522, Invalid=960, Unknown=0, NotChecked=0, Total=1482 [2021-11-12 23:46:53,409 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 222 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 189.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.83ms SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 239.97ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:53,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 157 Invalid, 414 Unknown, 0 Unchecked, 3.83ms Time], IncrementalHoareTripleChecker [278 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 239.97ms Time] [2021-11-12 23:46:53,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9841 states. [2021-11-12 23:46:53,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9841 to 3730. [2021-11-12 23:46:53,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 3727 states have (on average 1.1540112691172524) internal successors, (4301), 3729 states have internal predecessors, (4301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 4301 transitions. [2021-11-12 23:46:53,678 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 4301 transitions. Word has length 90 [2021-11-12 23:46:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:53,679 INFO L470 AbstractCegarLoop]: Abstraction has 3730 states and 4301 transitions. [2021-11-12 23:46:53,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.774193548387097) internal successors, (179), 32 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:53,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 4301 transitions. [2021-11-12 23:46:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-12 23:46:53,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:53,683 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1] [2021-11-12 23:46:53,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:53,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:46:53,896 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:46:53,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:53,897 INFO L85 PathProgramCache]: Analyzing trace with hash 65778939, now seen corresponding path program 4 times [2021-11-12 23:46:53,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:46:53,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53140525] [2021-11-12 23:46:53,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:53,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:46:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:54,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:46:54,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53140525] [2021-11-12 23:46:54,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53140525] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:46:54,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759930693] [2021-11-12 23:46:54,245 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 23:46:54,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:46:54,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:46:54,246 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:46:54,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-12 23:46:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:54,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:46:54,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:54,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:55,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759930693] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:46:55,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [585934573] [2021-11-12 23:46:55,563 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:46:55,563 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:46:55,563 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:46:55,563 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:46:55,563 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:46:55,572 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:46:55,575 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:55,579 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-12 23:46:55,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 23:46:55,581 INFO L180 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-11-12 23:46:55,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-12 23:46:55,585 INFO L180 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size [2021-11-12 23:46:55,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:55,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,602 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size [2021-11-12 23:46:55,605 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-12 23:46:55,606 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-11-12 23:46:55,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 23:46:55,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:55,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:46:55,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,627 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-12 23:46:55,628 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:55,629 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-12 23:46:55,630 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:55,631 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:55,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 23:46:55,635 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-12 23:46:55,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:46:55,638 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-12 23:46:55,639 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:46:55,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,670 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size [2021-11-12 23:46:55,677 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:46:55,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:55,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 23:46:55,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-12 23:46:55,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:55,693 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:46:56,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:46:56,049 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:46:56,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-11-12 23:46:56,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064595810] [2021-11-12 23:46:56,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:46:56,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-12 23:46:56,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:46:56,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-12 23:46:56,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1162, Invalid=1918, Unknown=0, NotChecked=0, Total=3080 [2021-11-12 23:46:56,054 INFO L87 Difference]: Start difference. First operand 3730 states and 4301 transitions. Second operand has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:57,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:57,080 INFO L93 Difference]: Finished difference Result 26438 states and 31923 transitions. [2021-11-12 23:46:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-12 23:46:57,081 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 0 states have call successors, (0), 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 137 [2021-11-12 23:46:57,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:57,154 INFO L225 Difference]: With dead ends: 26438 [2021-11-12 23:46:57,155 INFO L226 Difference]: Without dead ends: 26436 [2021-11-12 23:46:57,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1162, Invalid=1918, Unknown=0, NotChecked=0, Total=3080 [2021-11-12 23:46:57,176 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 470 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 212.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.65ms SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 272.71ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:57,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 240 Invalid, 474 Unknown, 0 Unchecked, 9.65ms Time], IncrementalHoareTripleChecker [271 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 272.71ms Time] [2021-11-12 23:46:57,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26436 states. [2021-11-12 23:46:57,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26436 to 7992. [2021-11-12 23:46:57,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7992 states, 7989 states have (on average 1.142946551508324) internal successors, (9131), 7991 states have internal predecessors, (9131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:57,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7992 states to 7992 states and 9131 transitions. [2021-11-12 23:46:57,758 INFO L78 Accepts]: Start accepts. Automaton has 7992 states and 9131 transitions. Word has length 137 [2021-11-12 23:46:57,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:57,759 INFO L470 AbstractCegarLoop]: Abstraction has 7992 states and 9131 transitions. [2021-11-12 23:46:57,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:46:57,759 INFO L276 IsEmpty]: Start isEmpty. Operand 7992 states and 9131 transitions. [2021-11-12 23:46:57,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-12 23:46:57,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:57,768 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 1, 1, 1] [2021-11-12 23:46:57,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:57,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable175 [2021-11-12 23:46:57,983 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:46:57,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:57,984 INFO L85 PathProgramCache]: Analyzing trace with hash 780697546, now seen corresponding path program 4 times [2021-11-12 23:46:57,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:46:57,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770206412] [2021-11-12 23:46:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:57,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:46:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:58,560 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:46:58,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770206412] [2021-11-12 23:46:58,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770206412] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:46:58,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851144145] [2021-11-12 23:46:58,561 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 23:46:58,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:46:58,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:46:58,575 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:46:58,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-12 23:46:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:58,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-12 23:46:58,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:59,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:59,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:00,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:00,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851144145] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:47:00,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1738456949] [2021-11-12 23:47:00,676 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:47:00,676 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:47:00,676 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:47:00,677 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:47:00,677 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:47:00,682 INFO L180 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-11-12 23:47:00,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:47:00,684 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-12 23:47:00,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 23:47:00,686 INFO L180 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-11-12 23:47:00,688 INFO L185 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-11-12 23:47:00,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:00,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:00,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:00,698 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.0 percent of original size [2021-11-12 23:47:00,699 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 23:47:00,701 INFO L180 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-11-12 23:47:00,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:47:00,703 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.6 percent of original size [2021-11-12 23:47:00,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:47:00,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:00,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:00,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:00,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:00,716 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-12 23:47:00,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:47:00,718 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-12 23:47:00,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-12 23:47:00,720 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:47:00,721 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:47:00,723 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-12 23:47:00,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:47:00,726 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-12 23:47:00,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-12 23:47:00,729 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:47:00,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:47:00,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:00,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:00,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:00,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:00,737 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:47:01,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:47:01,675 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:47:01,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2021-11-12 23:47:01,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425612593] [2021-11-12 23:47:01,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:47:01,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-12 23:47:01,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:47:01,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-12 23:47:01,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2042, Invalid=2928, Unknown=0, NotChecked=0, Total=4970 [2021-11-12 23:47:01,679 INFO L87 Difference]: Start difference. First operand 7992 states and 9131 transitions. Second operand has 64 states, 63 states have (on average 5.888888888888889) internal successors, (371), 64 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:03,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:03,885 INFO L93 Difference]: Finished difference Result 65014 states and 75717 transitions. [2021-11-12 23:47:03,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-12 23:47:03,886 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 5.888888888888889) internal successors, (371), 64 states have internal predecessors, (371), 0 states have call successors, (0), 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 186 [2021-11-12 23:47:03,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:03,978 INFO L225 Difference]: With dead ends: 65014 [2021-11-12 23:47:03,978 INFO L226 Difference]: Without dead ends: 65013 [2021-11-12 23:47:04,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 488 SyntacticMatches, 31 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3524 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2042, Invalid=2928, Unknown=0, NotChecked=0, Total=4970 [2021-11-12 23:47:04,002 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 592 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 445.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.19ms SdHoareTripleChecker+Time, 805 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 573.01ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:04,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 317 Invalid, 1065 Unknown, 0 Unchecked, 7.19ms Time], IncrementalHoareTripleChecker [805 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 573.01ms Time] [2021-11-12 23:47:04,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65013 states. [2021-11-12 23:47:05,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65013 to 15146. [2021-11-12 23:47:05,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15146 states, 15143 states have (on average 1.139866605032028) internal successors, (17261), 15145 states have internal predecessors, (17261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:05,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15146 states to 15146 states and 17261 transitions. [2021-11-12 23:47:05,482 INFO L78 Accepts]: Start accepts. Automaton has 15146 states and 17261 transitions. Word has length 186 [2021-11-12 23:47:05,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:05,483 INFO L470 AbstractCegarLoop]: Abstraction has 15146 states and 17261 transitions. [2021-11-12 23:47:05,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 5.888888888888889) internal successors, (371), 64 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:05,484 INFO L276 IsEmpty]: Start isEmpty. Operand 15146 states and 17261 transitions. [2021-11-12 23:47:05,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-12 23:47:05,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:05,501 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1, 1] [2021-11-12 23:47:05,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:05,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:47:05,716 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:47:05,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:05,716 INFO L85 PathProgramCache]: Analyzing trace with hash 465397587, now seen corresponding path program 5 times [2021-11-12 23:47:05,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:47:05,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255854915] [2021-11-12 23:47:05,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:05,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:47:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:06,904 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:47:06,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255854915] [2021-11-12 23:47:06,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255854915] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:47:06,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386592682] [2021-11-12 23:47:06,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:47:06,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:47:06,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:47:06,905 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:47:06,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-12 23:47:07,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-12 23:47:07,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:47:07,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-12 23:47:07,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:07,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:10,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:10,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386592682] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:47:10,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1410181972] [2021-11-12 23:47:10,266 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:47:10,266 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:47:10,267 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:47:10,267 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:47:10,267 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:47:10,273 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:47:10,274 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:47:10,279 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-12 23:47:10,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:47:10,288 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-12 23:47:10,289 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-12 23:47:10,292 INFO L180 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size [2021-11-12 23:47:10,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:47:10,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,328 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size [2021-11-12 23:47:10,330 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-12 23:47:10,332 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-11-12 23:47:10,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 23:47:10,335 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:47:10,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:47:10,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,349 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-12 23:47:10,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:47:10,350 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-12 23:47:10,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:47:10,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:47:10,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 23:47:10,356 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-11-12 23:47:10,356 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:47:10,358 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-12 23:47:10,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:47:10,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,405 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size [2021-11-12 23:47:10,407 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:47:10,409 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:47:10,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 23:47:10,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-12 23:47:10,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:10,429 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:47:10,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:47:10,787 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:47:10,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-11-12 23:47:10,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988476826] [2021-11-12 23:47:10,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:47:10,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-12 23:47:10,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:47:10,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-12 23:47:10,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4594, Invalid=6118, Unknown=0, NotChecked=0, Total=10712 [2021-11-12 23:47:10,794 INFO L87 Difference]: Start difference. First operand 15146 states and 17261 transitions. Second operand has 96 states, 95 states have (on average 5.905263157894737) internal successors, (561), 96 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:16,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:16,295 INFO L93 Difference]: Finished difference Result 182334 states and 213859 transitions. [2021-11-12 23:47:16,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-12 23:47:16,296 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.905263157894737) internal successors, (561), 96 states have internal predecessors, (561), 0 states have call successors, (0), 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 281 [2021-11-12 23:47:16,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:16,526 INFO L225 Difference]: With dead ends: 182334 [2021-11-12 23:47:16,526 INFO L226 Difference]: Without dead ends: 182332 [2021-11-12 23:47:16,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 787 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4594, Invalid=6118, Unknown=0, NotChecked=0, Total=10712 [2021-11-12 23:47:16,569 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 886 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 502.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.52ms SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 653.56ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:16,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [886 Valid, 480 Invalid, 990 Unknown, 0 Unchecked, 8.52ms Time], IncrementalHoareTripleChecker [589 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 653.56ms Time] [2021-11-12 23:47:16,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182332 states. [2021-11-12 23:47:19,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182332 to 32376. [2021-11-12 23:47:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32376 states, 32373 states have (on average 1.134124115775492) internal successors, (36715), 32375 states have internal predecessors, (36715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:19,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32376 states to 32376 states and 36715 transitions. [2021-11-12 23:47:19,935 INFO L78 Accepts]: Start accepts. Automaton has 32376 states and 36715 transitions. Word has length 281 [2021-11-12 23:47:19,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:19,936 INFO L470 AbstractCegarLoop]: Abstraction has 32376 states and 36715 transitions. [2021-11-12 23:47:19,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.905263157894737) internal successors, (561), 96 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:19,936 INFO L276 IsEmpty]: Start isEmpty. Operand 32376 states and 36715 transitions. [2021-11-12 23:47:19,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-11-12 23:47:19,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:19,963 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 1, 1, 1] [2021-11-12 23:47:19,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-12 23:47:20,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:47:20,179 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:47:20,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:20,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1450770794, now seen corresponding path program 5 times [2021-11-12 23:47:20,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:47:20,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559768108] [2021-11-12 23:47:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:20,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:47:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:22,053 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:22,054 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:47:22,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559768108] [2021-11-12 23:47:22,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559768108] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:47:22,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831956939] [2021-11-12 23:47:22,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:47:22,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:47:22,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:47:22,059 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:47:22,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-12 23:47:22,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2021-11-12 23:47:22,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:47:22,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-12 23:47:22,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:23,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:27,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831956939] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:47:27,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [772279185] [2021-11-12 23:47:27,812 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 23:47:27,813 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:47:27,813 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:47:27,813 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:47:27,813 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:47:27,824 INFO L180 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-11-12 23:47:27,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:47:27,826 INFO L180 QuantifierPusher]: treesize reduction 8, result has 73.3 percent of original size [2021-11-12 23:47:27,827 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 23:47:27,828 INFO L180 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-11-12 23:47:27,830 INFO L185 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-11-12 23:47:27,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:27,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:27,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:27,861 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.0 percent of original size [2021-11-12 23:47:27,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 23:47:27,865 INFO L180 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-11-12 23:47:27,867 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:47:27,870 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.6 percent of original size [2021-11-12 23:47:27,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:47:27,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:27,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:27,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:27,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:27,897 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-12 23:47:27,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:47:27,899 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-12 23:47:27,900 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-12 23:47:27,901 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:47:27,903 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:47:27,905 INFO L180 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-11-12 23:47:27,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 23:47:27,913 INFO L180 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-11-12 23:47:27,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-12 23:47:27,922 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-11-12 23:47:27,923 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:47:27,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:27,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:27,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:27,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:47:27,936 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:47:30,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:47:30,110 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:47:30,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 127 [2021-11-12 23:47:30,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882163697] [2021-11-12 23:47:30,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:47:30,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-11-12 23:47:30,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:47:30,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-11-12 23:47:30,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8154, Invalid=9936, Unknown=0, NotChecked=0, Total=18090 [2021-11-12 23:47:30,124 INFO L87 Difference]: Start difference. First operand 32376 states and 36715 transitions. Second operand has 128 states, 127 states have (on average 5.94488188976378) internal successors, (755), 128 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:51,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:51,956 INFO L93 Difference]: Finished difference Result 464894 states and 533221 transitions. [2021-11-12 23:47:51,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-11-12 23:47:51,957 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 5.94488188976378) internal successors, (755), 128 states have internal predecessors, (755), 0 states have call successors, (0), 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 378 [2021-11-12 23:47:51,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:52,911 INFO L225 Difference]: With dead ends: 464894 [2021-11-12 23:47:52,911 INFO L226 Difference]: Without dead ends: 464893 [2021-11-12 23:47:53,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1196 GetRequests, 1000 SyntacticMatches, 63 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13220 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=8154, Invalid=9936, Unknown=0, NotChecked=0, Total=18090 [2021-11-12 23:47:53,036 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1528 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 2814 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1451.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 3332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.01ms SdHoareTripleChecker+Time, 2814 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1865.25ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:53,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 637 Invalid, 3332 Unknown, 0 Unchecked, 24.01ms Time], IncrementalHoareTripleChecker [2814 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 1865.25ms Time] [2021-11-12 23:47:53,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464893 states. [2021-11-12 23:48:02,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464893 to 61018. [2021-11-12 23:48:02,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61018 states, 61015 states have (on average 1.1325247889863148) internal successors, (69101), 61017 states have internal predecessors, (69101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:48:02,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61018 states to 61018 states and 69101 transitions. [2021-11-12 23:48:02,814 INFO L78 Accepts]: Start accepts. Automaton has 61018 states and 69101 transitions. Word has length 378 [2021-11-12 23:48:02,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:48:02,815 INFO L470 AbstractCegarLoop]: Abstraction has 61018 states and 69101 transitions. [2021-11-12 23:48:02,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 5.94488188976378) internal successors, (755), 128 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:48:02,815 INFO L276 IsEmpty]: Start isEmpty. Operand 61018 states and 69101 transitions. [2021-11-12 23:48:02,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2021-11-12 23:48:02,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:48:02,898 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 94, 94, 94, 94, 1, 1, 1] [2021-11-12 23:48:02,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:48:03,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:48:03,123 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:48:03,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:48:03,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1014416381, now seen corresponding path program 6 times [2021-11-12 23:48:03,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:48:03,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119331144] [2021-11-12 23:48:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:03,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:48:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 26508 backedges. 0 proven. 26508 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:48:06,848 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:48:06,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119331144] [2021-11-12 23:48:06,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119331144] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:48:06,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611160411] [2021-11-12 23:48:06,849 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:48:06,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:48:06,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:48:06,864 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:48:06,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71fdf65e-bb2f-4fd0-98ca-6d34861f549a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process