./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH --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 30e0974778487c3ac56035f1f8ab25ce73456d36b8987ec761ccfaf99f917331 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:07:05,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:07:05,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:07:05,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:07:05,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:07:05,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:07:05,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:07:05,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:07:05,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:07:05,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:07:05,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:07:05,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:07:05,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:07:05,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:07:05,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:07:05,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:07:05,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:07:05,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:07:05,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:07:05,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:07:05,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:07:05,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:07:05,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:07:05,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:07:05,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:07:05,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:07:05,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:07:05,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:07:05,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:07:05,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:07:05,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:07:05,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:07:05,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:07:05,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:07:05,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:07:05,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:07:05,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:07:05,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:07:05,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:07:05,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:07:05,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:07:05,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-03 04:07:05,832 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:07:05,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:07:05,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:07:05,835 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:07:05,835 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:07:05,835 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:07:05,836 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:07:05,836 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:07:05,844 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:07:05,845 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:07:05,846 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:07:05,846 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:07:05,847 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:07:05,847 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:07:05,847 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:07:05,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:07:05,849 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:07:05,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:07:05,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:07:05,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:07:05,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:07:05,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:07:05,851 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-03 04:07:05,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:07:05,851 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:07:05,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:07:05,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:07:05,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:07:05,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:07:05,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:07:05,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:07:05,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:07:05,856 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:07:05,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:07:05,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:07:05,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:07:05,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:07:05,857 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_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30e0974778487c3ac56035f1f8ab25ce73456d36b8987ec761ccfaf99f917331 [2021-11-03 04:07:06,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:07:06,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:07:06,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:07:06,232 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:07:06,233 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:07:06,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2021-11-03 04:07:06,336 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/data/671ea4355/46b686fd6a9e4ba2adb66369a389a25d/FLAG05459f62a [2021-11-03 04:07:06,953 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:07:06,953 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2021-11-03 04:07:06,961 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/data/671ea4355/46b686fd6a9e4ba2adb66369a389a25d/FLAG05459f62a [2021-11-03 04:07:07,361 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/data/671ea4355/46b686fd6a9e4ba2adb66369a389a25d [2021-11-03 04:07:07,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:07:07,366 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:07:07,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:07:07,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:07:07,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:07:07,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:07:07" (1/1) ... [2021-11-03 04:07:07,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347fa4e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:07, skipping insertion in model container [2021-11-03 04:07:07,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:07:07" (1/1) ... [2021-11-03 04:07:07,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:07:07,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:07:07,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:07:07,577 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:07:07,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:07:07,627 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:07:07,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:07 WrapperNode [2021-11-03 04:07:07,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:07:07,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:07:07,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:07:07,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:07:07,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:07" (1/1) ... [2021-11-03 04:07:07,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:07" (1/1) ... [2021-11-03 04:07:07,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:07:07,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:07:07,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:07:07,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:07:07,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:07" (1/1) ... [2021-11-03 04:07:07,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:07" (1/1) ... [2021-11-03 04:07:07,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:07" (1/1) ... [2021-11-03 04:07:07,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:07" (1/1) ... [2021-11-03 04:07:07,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:07" (1/1) ... [2021-11-03 04:07:07,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:07" (1/1) ... [2021-11-03 04:07:07,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:07" (1/1) ... [2021-11-03 04:07:07,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:07:07,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:07:07,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:07:07,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:07:07,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:07" (1/1) ... [2021-11-03 04:07:07,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:07:07,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:07:07,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:07:07,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:07:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:07:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:07:08,126 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:07:08,126 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-03 04:07:08,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:08 BoogieIcfgContainer [2021-11-03 04:07:08,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:07:08,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:07:08,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:07:08,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:07:08,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:07:07" (1/3) ... [2021-11-03 04:07:08,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d3c58e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:08, skipping insertion in model container [2021-11-03 04:07:08,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:07" (2/3) ... [2021-11-03 04:07:08,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d3c58e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:08, skipping insertion in model container [2021-11-03 04:07:08,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:08" (3/3) ... [2021-11-03 04:07:08,141 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2021-11-03 04:07:08,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:07:08,149 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 04:07:08,212 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:07:08,220 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 [2021-11-03 04:07:08,220 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 04:07:08,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:08,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 04:07:08,245 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:08,246 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 04:07:08,247 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:07:08,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:08,254 INFO L85 PathProgramCache]: Analyzing trace with hash 964268, now seen corresponding path program 1 times [2021-11-03 04:07:08,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:07:08,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920398373] [2021-11-03 04:07:08,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:08,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:07:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:08,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:07:08,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920398373] [2021-11-03 04:07:08,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920398373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:08,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:08,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 04:07:08,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716928610] [2021-11-03 04:07:08,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:07:08,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:07:08,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:07:08,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:07:08,448 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:08,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:08,551 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2021-11-03 04:07:08,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:07:08,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-03 04:07:08,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:08,577 INFO L225 Difference]: With dead ends: 48 [2021-11-03 04:07:08,577 INFO L226 Difference]: Without dead ends: 29 [2021-11-03 04:07:08,581 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:07:08,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-03 04:07:08,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2021-11-03 04:07:08,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.65) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:08,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2021-11-03 04:07:08,655 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 4 [2021-11-03 04:07:08,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:08,656 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-11-03 04:07:08,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:08,657 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2021-11-03 04:07:08,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:07:08,658 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:08,658 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:07:08,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:07:08,659 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:07:08,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:08,661 INFO L85 PathProgramCache]: Analyzing trace with hash 29892385, now seen corresponding path program 1 times [2021-11-03 04:07:08,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:07:08,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583853812] [2021-11-03 04:07:08,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:08,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:07:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:08,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:08,695 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:07:08,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583853812] [2021-11-03 04:07:08,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583853812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:08,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:08,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 04:07:08,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231212641] [2021-11-03 04:07:08,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:07:08,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:07:08,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:07:08,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:07:08,701 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:08,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:08,732 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2021-11-03 04:07:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:07:08,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 04:07:08,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:08,735 INFO L225 Difference]: With dead ends: 27 [2021-11-03 04:07:08,735 INFO L226 Difference]: Without dead ends: 25 [2021-11-03 04:07:08,736 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:07:08,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-03 04:07:08,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-11-03 04:07:08,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.5) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:08,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2021-11-03 04:07:08,749 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 5 [2021-11-03 04:07:08,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:08,750 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2021-11-03 04:07:08,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:08,750 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2021-11-03 04:07:08,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:07:08,751 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:08,751 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:07:08,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:07:08,752 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:07:08,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:08,753 INFO L85 PathProgramCache]: Analyzing trace with hash 925813859, now seen corresponding path program 1 times [2021-11-03 04:07:08,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:07:08,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411621787] [2021-11-03 04:07:08,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:08,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:07:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:08,812 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:07:08,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411621787] [2021-11-03 04:07:08,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411621787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:08,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:08,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 04:07:08,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865977257] [2021-11-03 04:07:08,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:07:08,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:07:08,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:07:08,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:07:08,817 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:08,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:08,830 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2021-11-03 04:07:08,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:07:08,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 04:07:08,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:08,833 INFO L225 Difference]: With dead ends: 24 [2021-11-03 04:07:08,833 INFO L226 Difference]: Without dead ends: 23 [2021-11-03 04:07:08,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:07:08,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-03 04:07:08,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-03 04:07:08,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.4) 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) [2021-11-03 04:07:08,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-11-03 04:07:08,840 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 6 [2021-11-03 04:07:08,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:08,841 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-11-03 04:07:08,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:08,842 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-11-03 04:07:08,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 04:07:08,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:08,843 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:07:08,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 04:07:08,843 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:07:08,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:08,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1364541373, now seen corresponding path program 1 times [2021-11-03 04:07:08,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:07:08,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99506689] [2021-11-03 04:07:08,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:08,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:07:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:08,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:08,895 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:07:08,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99506689] [2021-11-03 04:07:08,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99506689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:08,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:08,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:07:08,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739925988] [2021-11-03 04:07:08,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:07:08,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:07:08,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:07:08,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:07:08,899 INFO L87 Difference]: Start difference. First operand 23 states and 28 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) [2021-11-03 04:07:08,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:08,912 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-11-03 04:07:08,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:07:08,913 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 [2021-11-03 04:07:08,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:08,914 INFO L225 Difference]: With dead ends: 30 [2021-11-03 04:07:08,915 INFO L226 Difference]: Without dead ends: 29 [2021-11-03 04:07:08,915 INFO L786 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 [2021-11-03 04:07:08,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-03 04:07:08,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2021-11-03 04:07:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:08,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-11-03 04:07:08,922 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 7 [2021-11-03 04:07:08,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:08,922 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-11-03 04:07:08,923 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) [2021-11-03 04:07:08,923 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-11-03 04:07:08,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 04:07:08,924 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:08,924 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-11-03 04:07:08,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 04:07:08,925 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)] === [2021-11-03 04:07:08,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:08,926 INFO L85 PathProgramCache]: Analyzing trace with hash 864087095, now seen corresponding path program 1 times [2021-11-03 04:07:08,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:07:08,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388773988] [2021-11-03 04:07:08,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:08,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:07:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:09,010 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:07:09,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388773988] [2021-11-03 04:07:09,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388773988] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:07:09,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825444322] [2021-11-03 04:07:09,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:09,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:07:09,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:07:09,014 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:07:09,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:07:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:09,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:07:09,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:09,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:09,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:09,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825444322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:07:09,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [200700245] [2021-11-03 04:07:09,296 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 04:07:09,297 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:07:09,303 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:07:09,310 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:07:09,310 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:07:09,366 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:09,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:07:09,384 INFO L180 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size [2021-11-03 04:07:09,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:07:09,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:09,407 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:09,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:09,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:09,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:07:09,439 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:09,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:07:09,452 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-11-03 04:07:09,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 04:07:09,460 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:09,465 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:09,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:09,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:09,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-03 04:07:09,483 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:09,499 INFO L185 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size 21 [2021-11-03 04:07:09,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:09,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:09,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:09,687 INFO L180 QuantifierPusher]: treesize reduction 16, result has 77.8 percent of original size [2021-11-03 04:07:09,700 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-03 04:07:09,712 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:09,720 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:09,740 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:09,745 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:09,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-03 04:07:09,766 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:09,778 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-11-03 04:07:09,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:09,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:09,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:09,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:09,865 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:07:09,869 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:07:09,876 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:09,891 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:09,894 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:09,899 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:09,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:07:09,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:09,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:07:09,925 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:07:09,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:07:09,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:09,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:09,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:09,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:09,981 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:09,985 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:09,988 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:09,993 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:09,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:07:09,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:10,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:10,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:10,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:10,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:10,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:10,041 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:10,052 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:07:10,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:10,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:10,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:10,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:10,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:10,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:10,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:10,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:10,124 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:07:10,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:07:10,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:07:10,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-03 04:07:10,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291233620] [2021-11-03 04:07:10,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:07:10,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:07:10,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:07:10,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:07:10,451 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 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) [2021-11-03 04:07:10,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:10,527 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2021-11-03 04:07:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:07:10,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 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) Word has length 10 [2021-11-03 04:07:10,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:10,530 INFO L225 Difference]: With dead ends: 59 [2021-11-03 04:07:10,530 INFO L226 Difference]: Without dead ends: 57 [2021-11-03 04:07:10,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:07:10,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-03 04:07:10,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 40. [2021-11-03 04:07:10,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.263157894736842) internal successors, (48), 39 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:10,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2021-11-03 04:07:10,539 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 10 [2021-11-03 04:07:10,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:10,540 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2021-11-03 04:07:10,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 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) [2021-11-03 04:07:10,541 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2021-11-03 04:07:10,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-03 04:07:10,542 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:10,542 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2021-11-03 04:07:10,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:10,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4 [2021-11-03 04:07:10,757 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:07:10,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:10,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1803666446, now seen corresponding path program 2 times [2021-11-03 04:07:10,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:07:10,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696602363] [2021-11-03 04:07:10,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:10,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:07:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:10,853 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:10,854 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:07:10,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696602363] [2021-11-03 04:07:10,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696602363] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:07:10,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689939924] [2021-11-03 04:07:10,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:07:10,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:07:10,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:07:10,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:07:10,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 04:07:10,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-03 04:07:10,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:07:10,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:07:10,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:11,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:11,214 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:11,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689939924] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:07:11,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1422825182] [2021-11-03 04:07:11,220 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 04:07:11,221 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:07:11,221 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:07:11,221 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:07:11,222 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:07:11,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:11,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:07:11,247 INFO L180 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size [2021-11-03 04:07:11,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:07:11,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:11,266 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:11,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:11,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:11,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:07:11,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:11,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:07:11,296 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-11-03 04:07:11,298 INFO L185 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-11-03 04:07:11,303 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-11-03 04:07:11,309 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:11,314 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:11,318 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:11,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:07:11,330 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:11,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:07:11,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,369 INFO L180 QuantifierPusher]: treesize reduction 11, result has 82.3 percent of original size [2021-11-03 04:07:11,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 04:07:11,408 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:11,414 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:11,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:11,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:11,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-03 04:07:11,429 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:11,435 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-03 04:07:11,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,476 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:07:11,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:07:11,484 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:11,487 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:11,489 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:11,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:11,495 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:07:11,499 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:11,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:07:11,507 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:07:11,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:07:11,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,533 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:11,536 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:11,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:11,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:11,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:07:11,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:11,577 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:07:11,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:11,612 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:07:11,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:07:11,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:07:11,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-03 04:07:11,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105732120] [2021-11-03 04:07:11,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:07:11,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:07:11,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:07:11,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:07:11,882 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 12 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:12,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:12,047 INFO L93 Difference]: Finished difference Result 171 states and 221 transitions. [2021-11-03 04:07:12,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:07:12,047 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 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 22 [2021-11-03 04:07:12,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:12,050 INFO L225 Difference]: With dead ends: 171 [2021-11-03 04:07:12,050 INFO L226 Difference]: Without dead ends: 169 [2021-11-03 04:07:12,050 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:07:12,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-03 04:07:12,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 100. [2021-11-03 04:07:12,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 98 states have (on average 1.2244897959183674) internal successors, (120), 99 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:12,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2021-11-03 04:07:12,066 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 22 [2021-11-03 04:07:12,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:12,066 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2021-11-03 04:07:12,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:12,067 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2021-11-03 04:07:12,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 04:07:12,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:12,069 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1] [2021-11-03 04:07:12,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:12,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:07:12,284 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:07:12,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:12,285 INFO L85 PathProgramCache]: Analyzing trace with hash -885058500, now seen corresponding path program 3 times [2021-11-03 04:07:12,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:07:12,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656466068] [2021-11-03 04:07:12,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:12,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:07:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:12,463 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:12,464 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:07:12,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656466068] [2021-11-03 04:07:12,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656466068] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:07:12,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777314001] [2021-11-03 04:07:12,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 04:07:12,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:07:12,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:07:12,466 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:07:12,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 04:07:12,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 04:07:12,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:07:12,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 04:07:12,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:12,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:13,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777314001] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:07:13,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1057501563] [2021-11-03 04:07:13,127 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 04:07:13,127 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:07:13,128 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:07:13,128 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:07:13,128 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:07:13,135 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:13,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:07:13,143 INFO L180 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size [2021-11-03 04:07:13,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:07:13,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:13,164 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:13,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:13,169 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:13,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:07:13,176 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:13,183 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:07:13,187 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-11-03 04:07:13,189 INFO L185 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-11-03 04:07:13,192 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-11-03 04:07:13,195 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:13,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:13,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:13,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:07:13,204 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:13,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:07:13,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,236 INFO L180 QuantifierPusher]: treesize reduction 11, result has 82.3 percent of original size [2021-11-03 04:07:13,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 04:07:13,245 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:13,249 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:13,251 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:13,254 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:13,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-03 04:07:13,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:13,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-03 04:07:13,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,280 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:07:13,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:07:13,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:13,291 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:13,293 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:13,295 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:13,297 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:07:13,299 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:13,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:07:13,308 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:07:13,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:07:13,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,335 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:13,338 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:13,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:13,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:13,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:07:13,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,365 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:13,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:07:13,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:13,403 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:07:13,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:07:13,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:07:13,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2021-11-03 04:07:13,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087948177] [2021-11-03 04:07:13,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-03 04:07:13,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:07:13,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-03 04:07:13,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=528, Unknown=0, NotChecked=0, Total=870 [2021-11-03 04:07:13,668 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand has 24 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:14,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:14,075 INFO L93 Difference]: Finished difference Result 540 states and 689 transitions. [2021-11-03 04:07:14,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 04:07:14,076 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-03 04:07:14,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:14,081 INFO L225 Difference]: With dead ends: 540 [2021-11-03 04:07:14,082 INFO L226 Difference]: Without dead ends: 538 [2021-11-03 04:07:14,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=342, Invalid=528, Unknown=0, NotChecked=0, Total=870 [2021-11-03 04:07:14,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-11-03 04:07:14,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 220. [2021-11-03 04:07:14,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 218 states have (on average 1.2110091743119267) internal successors, (264), 219 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:14,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 264 transitions. [2021-11-03 04:07:14,148 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 264 transitions. Word has length 46 [2021-11-03 04:07:14,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:14,149 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 264 transitions. [2021-11-03 04:07:14,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:14,149 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 264 transitions. [2021-11-03 04:07:14,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 04:07:14,155 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:14,155 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1] [2021-11-03 04:07:14,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:14,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-11-03 04:07:14,372 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:07:14,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:14,373 INFO L85 PathProgramCache]: Analyzing trace with hash -648989032, now seen corresponding path program 4 times [2021-11-03 04:07:14,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:07:14,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836430482] [2021-11-03 04:07:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:14,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:07:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:14,908 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:07:14,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836430482] [2021-11-03 04:07:14,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836430482] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:07:14,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976100767] [2021-11-03 04:07:14,909 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-03 04:07:14,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:07:14,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:07:14,910 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:07:14,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 04:07:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:15,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-03 04:07:15,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:15,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:16,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976100767] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:07:16,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [382200081] [2021-11-03 04:07:16,513 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 04:07:16,514 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:07:16,514 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:07:16,514 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:07:16,514 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:07:16,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:16,526 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:07:16,530 INFO L180 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size [2021-11-03 04:07:16,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:07:16,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:16,539 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:16,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:16,544 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:16,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:07:16,550 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:16,559 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:07:16,563 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-11-03 04:07:16,564 INFO L185 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-11-03 04:07:16,567 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-11-03 04:07:16,569 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:16,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:16,575 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:16,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:07:16,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:16,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:07:16,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,598 INFO L180 QuantifierPusher]: treesize reduction 11, result has 82.3 percent of original size [2021-11-03 04:07:16,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 04:07:16,603 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:16,606 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:16,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:16,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:16,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-03 04:07:16,619 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:16,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-03 04:07:16,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,643 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:07:16,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:07:16,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:16,648 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:16,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:16,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:16,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:07:16,656 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:16,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:07:16,662 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:07:16,664 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:07:16,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,677 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:16,686 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:16,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:16,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:16,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:07:16,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,722 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:16,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:07:16,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:16,737 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:07:16,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:07:16,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:07:16,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2021-11-03 04:07:16,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447416351] [2021-11-03 04:07:16,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-03 04:07:16,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:07:16,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-03 04:07:16,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1236, Invalid=1520, Unknown=0, NotChecked=0, Total=2756 [2021-11-03 04:07:16,911 INFO L87 Difference]: Start difference. First operand 220 states and 264 transitions. Second operand has 48 states, 47 states have (on average 4.0) internal successors, (188), 47 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:17,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:17,828 INFO L93 Difference]: Finished difference Result 1818 states and 2273 transitions. [2021-11-03 04:07:17,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-03 04:07:17,829 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.0) internal successors, (188), 47 states have internal predecessors, (188), 0 states have call successors, (0), 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 94 [2021-11-03 04:07:17,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:17,840 INFO L225 Difference]: With dead ends: 1818 [2021-11-03 04:07:17,840 INFO L226 Difference]: Without dead ends: 1816 [2021-11-03 04:07:17,843 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1236, Invalid=1520, Unknown=0, NotChecked=0, Total=2756 [2021-11-03 04:07:17,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2021-11-03 04:07:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 460. [2021-11-03 04:07:17,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.205240174672489) internal successors, (552), 459 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:17,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 552 transitions. [2021-11-03 04:07:17,881 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 552 transitions. Word has length 94 [2021-11-03 04:07:17,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:17,882 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 552 transitions. [2021-11-03 04:07:17,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.0) internal successors, (188), 47 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:17,883 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 552 transitions. [2021-11-03 04:07:17,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-03 04:07:17,890 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:17,891 INFO L513 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1] [2021-11-03 04:07:17,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:18,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:07:18,106 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)] === [2021-11-03 04:07:18,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:18,107 INFO L85 PathProgramCache]: Analyzing trace with hash 136020816, now seen corresponding path program 5 times [2021-11-03 04:07:18,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:07:18,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214399129] [2021-11-03 04:07:18,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:18,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:07:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:19,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:19,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:07:19,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214399129] [2021-11-03 04:07:19,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214399129] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:07:19,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177110789] [2021-11-03 04:07:19,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:07:19,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:07:19,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:07:19,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:07:19,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 04:07:19,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-03 04:07:19,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:07:19,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-03 04:07:19,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:20,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:20,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:23,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177110789] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:07:23,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1312805313] [2021-11-03 04:07:23,868 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 04:07:23,868 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:07:23,868 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:07:23,869 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:07:23,869 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:07:23,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:23,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:07:23,883 INFO L180 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size [2021-11-03 04:07:23,885 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:07:23,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:23,889 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:23,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:23,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:23,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:07:23,895 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:23,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:07:23,903 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-11-03 04:07:23,905 INFO L185 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-11-03 04:07:23,906 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-11-03 04:07:23,909 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:23,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:23,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:23,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:07:23,913 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:23,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:07:23,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:23,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:23,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:23,941 INFO L180 QuantifierPusher]: treesize reduction 11, result has 82.3 percent of original size [2021-11-03 04:07:23,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 04:07:23,946 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:23,948 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:23,949 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:23,951 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:23,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-03 04:07:23,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:23,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-03 04:07:23,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:23,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:23,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:23,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:23,970 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:07:23,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:07:23,973 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:23,975 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:23,976 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:24,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:24,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:07:24,006 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:24,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:07:24,011 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:07:24,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:07:24,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,023 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:24,025 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:24,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:24,027 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:24,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:07:24,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,050 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:24,051 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:07:24,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:24,061 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:07:24,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:07:24,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:07:24,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2021-11-03 04:07:24,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487385485] [2021-11-03 04:07:24,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-03 04:07:24,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:07:24,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-03 04:07:24,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4764, Invalid=5336, Unknown=0, NotChecked=0, Total=10100 [2021-11-03 04:07:24,283 INFO L87 Difference]: Start difference. First operand 460 states and 552 transitions. Second operand has 96 states, 95 states have (on average 4.0) internal successors, (380), 95 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:28,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:28,168 INFO L93 Difference]: Finished difference Result 6534 states and 8033 transitions. [2021-11-03 04:07:28,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-03 04:07:28,169 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.0) internal successors, (380), 95 states have internal predecessors, (380), 0 states have call successors, (0), 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 190 [2021-11-03 04:07:28,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:28,209 INFO L225 Difference]: With dead ends: 6534 [2021-11-03 04:07:28,209 INFO L226 Difference]: Without dead ends: 6532 [2021-11-03 04:07:28,219 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=4764, Invalid=5336, Unknown=0, NotChecked=0, Total=10100 [2021-11-03 04:07:28,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2021-11-03 04:07:28,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 940. [2021-11-03 04:07:28,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 938 states have (on average 1.2025586353944564) internal successors, (1128), 939 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1128 transitions. [2021-11-03 04:07:28,313 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1128 transitions. Word has length 190 [2021-11-03 04:07:28,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:28,313 INFO L470 AbstractCegarLoop]: Abstraction has 940 states and 1128 transitions. [2021-11-03 04:07:28,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.0) internal successors, (380), 95 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:28,314 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1128 transitions. [2021-11-03 04:07:28,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2021-11-03 04:07:28,321 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:28,321 INFO L513 BasicCegarLoop]: trace histogram [95, 95, 94, 94, 1, 1, 1, 1] [2021-11-03 04:07:28,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:28,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:07:28,546 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:07:28,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash 579353792, now seen corresponding path program 6 times [2021-11-03 04:07:28,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:07:28,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256882137] [2021-11-03 04:07:28,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:28,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:07:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:32,662 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:07:32,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256882137] [2021-11-03 04:07:32,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256882137] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:07:32,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375536930] [2021-11-03 04:07:32,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 04:07:32,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:07:32,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:07:32,684 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:07:32,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 04:07:33,218 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 04:07:33,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:07:33,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-03 04:07:33,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:34,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:45,740 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:45,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375536930] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:07:45,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [966966095] [2021-11-03 04:07:45,743 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 04:07:45,744 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:07:45,744 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:07:45,744 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:07:45,744 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:07:45,750 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:45,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:07:45,754 INFO L180 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size [2021-11-03 04:07:45,756 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:07:45,758 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:45,759 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:45,760 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:45,761 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:45,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:07:45,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:45,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:07:45,770 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-11-03 04:07:45,771 INFO L185 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-11-03 04:07:45,772 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-11-03 04:07:45,782 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:45,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:45,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:45,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:07:45,789 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:45,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:07:45,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,807 INFO L180 QuantifierPusher]: treesize reduction 11, result has 82.3 percent of original size [2021-11-03 04:07:45,809 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 04:07:45,811 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:45,813 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:45,815 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:45,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:45,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-03 04:07:45,820 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:45,823 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-03 04:07:45,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,839 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:07:45,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:07:45,842 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:45,845 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:45,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:45,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:45,849 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:07:45,850 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:45,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:07:45,859 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:07:45,860 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:07:45,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,872 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:45,874 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:07:45,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:45,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:07:45,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:07:45,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:07:45,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:07:45,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:07:45,922 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:07:46,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:07:46,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:07:46,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2021-11-03 04:07:46,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596786280] [2021-11-03 04:07:46,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-03 04:07:46,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:07:46,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-03 04:07:46,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18732, Invalid=19880, Unknown=0, NotChecked=0, Total=38612 [2021-11-03 04:07:46,237 INFO L87 Difference]: Start difference. First operand 940 states and 1128 transitions. Second operand has 192 states, 191 states have (on average 4.0) internal successors, (764), 191 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:08:18,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:08:18,753 INFO L93 Difference]: Finished difference Result 24606 states and 29921 transitions. [2021-11-03 04:08:18,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-03 04:08:18,755 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.0) internal successors, (764), 191 states have internal predecessors, (764), 0 states have call successors, (0), 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 382 [2021-11-03 04:08:18,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:08:18,873 INFO L225 Difference]: With dead ends: 24606 [2021-11-03 04:08:18,873 INFO L226 Difference]: Without dead ends: 24604 [2021-11-03 04:08:18,895 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1239 GetRequests, 1044 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1609 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=18732, Invalid=19880, Unknown=0, NotChecked=0, Total=38612 [2021-11-03 04:08:18,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24604 states. [2021-11-03 04:08:19,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24604 to 1900. [2021-11-03 04:08:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1898 states have (on average 1.2012644889357218) internal successors, (2280), 1899 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:08:19,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 2280 transitions. [2021-11-03 04:08:19,240 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 2280 transitions. Word has length 382 [2021-11-03 04:08:19,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:08:19,241 INFO L470 AbstractCegarLoop]: Abstraction has 1900 states and 2280 transitions. [2021-11-03 04:08:19,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.0) internal successors, (764), 191 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:08:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 2280 transitions. [2021-11-03 04:08:19,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2021-11-03 04:08:19,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:08:19,272 INFO L513 BasicCegarLoop]: trace histogram [191, 191, 190, 190, 1, 1, 1, 1] [2021-11-03 04:08:19,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:08:19,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-11-03 04:08:19,496 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:08:19,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:08:19,497 INFO L85 PathProgramCache]: Analyzing trace with hash -591253600, now seen corresponding path program 7 times [2021-11-03 04:08:19,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:08:19,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597561918] [2021-11-03 04:08:19,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:08:19,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:08:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:08:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 72390 backedges. 0 proven. 72390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:34,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:08:34,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597561918] [2021-11-03 04:08:34,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597561918] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:08:34,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132119323] [2021-11-03 04:08:34,944 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-03 04:08:34,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:08:34,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:08:34,960 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:08:34,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 04:08:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:08:35,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 1349 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-03 04:08:35,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:08:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 72390 backedges. 0 proven. 72390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:38,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:09:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 72390 backedges. 0 proven. 72390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:21,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132119323] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:09:21,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [137040989] [2021-11-03 04:09:21,611 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 04:09:21,612 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:09:21,612 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:09:21,612 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:09:21,612 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:09:21,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:09:21,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:09:21,620 INFO L180 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size [2021-11-03 04:09:21,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:09:21,628 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:09:21,631 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:09:21,632 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:09:21,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:09:21,634 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:09:21,638 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:09:21,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:09:21,644 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-11-03 04:09:21,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 04:09:21,647 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:09:21,649 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:09:21,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:09:21,652 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:09:21,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-03 04:09:21,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:09:21,658 INFO L185 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size 21 [2021-11-03 04:09:21,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,673 INFO L180 QuantifierPusher]: treesize reduction 16, result has 77.8 percent of original size [2021-11-03 04:09:21,675 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-03 04:09:21,677 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:09:21,679 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:09:21,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:09:21,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:09:21,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-03 04:09:21,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:09:21,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-11-03 04:09:21,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,703 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:09:21,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:09:21,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:09:21,708 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:09:21,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:09:21,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:09:21,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:09:21,714 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:09:21,716 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:09:21,720 INFO L180 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-11-03 04:09:21,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:09:21,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:09:21,738 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:09:21,739 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:09:21,741 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:09:21,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:09:21,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,766 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:09:21,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:09:21,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:09:21,777 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:09:22,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:09:22,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:09:22,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2021-11-03 04:09:22,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052221860] [2021-11-03 04:09:22,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-03 04:09:22,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:09:22,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-03 04:09:22,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74316, Invalid=76616, Unknown=0, NotChecked=0, Total=150932 [2021-11-03 04:09:22,270 INFO L87 Difference]: Start difference. First operand 1900 states and 2280 transitions. Second operand has 384 states, 383 states have (on average 4.0) internal successors, (1532), 383 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:18,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:18,478 INFO L93 Difference]: Finished difference Result 95310 states and 115169 transitions. [2021-11-03 04:17:18,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-03 04:17:18,480 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.0) internal successors, (1532), 383 states have internal predecessors, (1532), 0 states have call successors, (0), 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 766 [2021-11-03 04:17:18,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:18,719 INFO L225 Difference]: With dead ends: 95310 [2021-11-03 04:17:18,720 INFO L226 Difference]: Without dead ends: 95308 [2021-11-03 04:17:18,799 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2487 GetRequests, 2100 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3241 ImplicationChecksByTransitivity, 55.4s TimeCoverageRelationStatistics Valid=74316, Invalid=76616, Unknown=0, NotChecked=0, Total=150932 [2021-11-03 04:17:18,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95308 states. [2021-11-03 04:17:19,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95308 to 3820. [2021-11-03 04:17:19,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3820 states, 3818 states have (on average 1.2006286013619696) internal successors, (4584), 3819 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:19,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3820 states to 3820 states and 4584 transitions. [2021-11-03 04:17:19,773 INFO L78 Accepts]: Start accepts. Automaton has 3820 states and 4584 transitions. Word has length 766 [2021-11-03 04:17:19,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:19,774 INFO L470 AbstractCegarLoop]: Abstraction has 3820 states and 4584 transitions. [2021-11-03 04:17:19,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.0) internal successors, (1532), 383 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:19,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3820 states and 4584 transitions. [2021-11-03 04:17:19,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1535 [2021-11-03 04:17:19,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:19,839 INFO L513 BasicCegarLoop]: trace histogram [383, 383, 382, 382, 1, 1, 1, 1] [2021-11-03 04:17:19,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-03 04:17:20,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2021-11-03 04:17:20,040 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)] === [2021-11-03 04:17:20,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:20,041 INFO L85 PathProgramCache]: Analyzing trace with hash -155708064, now seen corresponding path program 8 times [2021-11-03 04:17:20,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:20,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312360274] [2021-11-03 04:17:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:20,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:13,710 INFO L134 CoverageAnalysis]: Checked inductivity of 292230 backedges. 0 proven. 292230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:13,711 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:18:13,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312360274] [2021-11-03 04:18:13,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312360274] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:18:13,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898161346] [2021-11-03 04:18:13,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:18:13,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:18:13,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:18:13,721 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:18:13,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8b1d52-c5bb-4ccf-9f49-1e710e4e57fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 04:18:19,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2021-11-03 04:18:19,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:18:19,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 2693 conjuncts, 384 conjunts are in the unsatisfiable core [2021-11-03 04:18:19,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 292230 backedges. 0 proven. 292230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:24,809 INFO L328 TraceCheckSpWp]: Computing backward predicates...