./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9b244382de79ee7e63c5a39dc4ba4645eb8228d285c75cf6df9353c232d1a135 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:43:30,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:43:30,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:43:30,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:43:30,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:43:30,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:43:30,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:43:30,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:43:30,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:43:30,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:43:30,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:43:30,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:43:30,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:43:30,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:43:30,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:43:30,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:43:30,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:43:30,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:43:30,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:43:30,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:43:30,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:43:30,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:43:30,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:43:30,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:43:30,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:43:30,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:43:30,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:43:30,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:43:30,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:43:30,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:43:30,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:43:30,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:43:30,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:43:30,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:43:30,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:43:30,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:43:30,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:43:30,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:43:30,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:43:30,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:43:30,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:43:30,807 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-12 23:43:30,845 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:43:30,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:43:30,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:43:30,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:43:30,849 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:43:30,849 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:43:30,849 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:43:30,849 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:43:30,849 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:43:30,850 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:43:30,851 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:43:30,851 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:43:30,851 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:43:30,852 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:43:30,852 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:43:30,852 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:43:30,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:43:30,853 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:43:30,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:43:30,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:43:30,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:43:30,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:43:30,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:43:30,854 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-12 23:43:30,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:43:30,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:43:30,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:43:30,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:43:30,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:43:30,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:43:30,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:43:30,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:43:30,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:43:30,857 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:43:30,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:43:30,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:43:30,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:43:30,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:43:30,858 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_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b244382de79ee7e63c5a39dc4ba4645eb8228d285c75cf6df9353c232d1a135 [2021-11-12 23:43:31,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:43:31,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:43:31,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:43:31,174 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:43:31,177 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:43:31,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2021-11-12 23:43:31,256 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/data/9c057cb9c/d4f849f7315b44878e311a19eafa7cdc/FLAG65212bfe2 [2021-11-12 23:43:31,722 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:43:31,723 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2021-11-12 23:43:31,730 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/data/9c057cb9c/d4f849f7315b44878e311a19eafa7cdc/FLAG65212bfe2 [2021-11-12 23:43:32,090 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/data/9c057cb9c/d4f849f7315b44878e311a19eafa7cdc [2021-11-12 23:43:32,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:43:32,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:43:32,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:32,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:43:32,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:43:32,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:32" (1/1) ... [2021-11-12 23:43:32,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@279abff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:32, skipping insertion in model container [2021-11-12 23:43:32,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:32" (1/1) ... [2021-11-12 23:43:32,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:43:32,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:43:32,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:32,323 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:43:32,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:32,351 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:43:32,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:32 WrapperNode [2021-11-12 23:43:32,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:32,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:43:32,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:43:32,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:43:32,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:32" (1/1) ... [2021-11-12 23:43:32,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:32" (1/1) ... [2021-11-12 23:43:32,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:43:32,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:43:32,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:43:32,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:43:32,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:32" (1/1) ... [2021-11-12 23:43:32,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:32" (1/1) ... [2021-11-12 23:43:32,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:32" (1/1) ... [2021-11-12 23:43:32,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:32" (1/1) ... [2021-11-12 23:43:32,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:32" (1/1) ... [2021-11-12 23:43:32,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:32" (1/1) ... [2021-11-12 23:43:32,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:32" (1/1) ... [2021-11-12 23:43:32,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:43:32,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:43:32,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:43:32,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:43:32,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:32" (1/1) ... [2021-11-12 23:43:32,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:43:32,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:43:32,481 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:43:32,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:43:32,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:43:32,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:43:32,735 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:43:32,735 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 23:43:32,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:43:32 BoogieIcfgContainer [2021-11-12 23:43:32,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:43:32,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:43:32,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:43:32,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:43:32,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:43:32" (1/3) ... [2021-11-12 23:43:32,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbe22fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:43:32, skipping insertion in model container [2021-11-12 23:43:32,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:32" (2/3) ... [2021-11-12 23:43:32,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbe22fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:43:32, skipping insertion in model container [2021-11-12 23:43:32,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:43:32" (3/3) ... [2021-11-12 23:43:32,747 INFO L111 eAbstractionObserver]: Analyzing ICFG Avery-FLOPS2006-Table1.c [2021-11-12 23:43:32,752 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:43:32,752 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-12 23:43:32,799 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:43:32,807 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:43:32,817 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-12 23:43:32,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 23:43:32,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:32,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 23:43:32,840 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:43:32,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:32,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2507698, now seen corresponding path program 1 times [2021-11-12 23:43:32,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:32,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500685532] [2021-11-12 23:43:32,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:32,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:33,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:33,030 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:33,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500685532] [2021-11-12 23:43:33,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500685532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:33,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:33,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:43:33,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117521476] [2021-11-12 23:43:33,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:33,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:43:33,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:33,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:43:33,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:43:33,119 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:33,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:33,295 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2021-11-12 23:43:33,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:43:33,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-12 23:43:33,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:33,315 INFO L225 Difference]: With dead ends: 38 [2021-11-12 23:43:33,315 INFO L226 Difference]: Without dead ends: 31 [2021-11-12 23:43:33,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:43:33,326 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.13ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 133.82ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:33,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 20 Invalid, 41 Unknown, 0 Unchecked, 2.13ms Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 133.82ms Time] [2021-11-12 23:43:33,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-12 23:43:33,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2021-11-12 23:43:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:33,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-11-12 23:43:33,378 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 4 [2021-11-12 23:43:33,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:33,380 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-11-12 23:43:33,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:33,381 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-11-12 23:43:33,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:43:33,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:33,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:43:33,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:43:33,383 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:43:33,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:33,388 INFO L85 PathProgramCache]: Analyzing trace with hash 77779592, now seen corresponding path program 1 times [2021-11-12 23:43:33,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:33,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297974096] [2021-11-12 23:43:33,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:33,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:33,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:33,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:33,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297974096] [2021-11-12 23:43:33,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297974096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:33,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:33,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:43:33,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088765613] [2021-11-12 23:43:33,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:33,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:43:33,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:33,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:43:33,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:43:33,490 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:33,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:33,549 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-11-12 23:43:33,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:43:33,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-12 23:43:33,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:33,552 INFO L225 Difference]: With dead ends: 31 [2021-11-12 23:43:33,554 INFO L226 Difference]: Without dead ends: 21 [2021-11-12 23:43:33,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:43:33,557 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.39ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.62ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:33,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 26 Unknown, 0 Unchecked, 1.39ms Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 40.62ms Time] [2021-11-12 23:43:33,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-12 23:43:33,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-11-12 23:43:33,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:33,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-11-12 23:43:33,570 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 5 [2021-11-12 23:43:33,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:33,570 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-11-12 23:43:33,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:33,573 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-11-12 23:43:33,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 23:43:33,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:33,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 23:43:33,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:43:33,576 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:43:33,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:33,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1885067980, now seen corresponding path program 1 times [2021-11-12 23:43:33,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:33,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406937711] [2021-11-12 23:43:33,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:33,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:33,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:33,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406937711] [2021-11-12 23:43:33,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406937711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:33,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:33,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-12 23:43:33,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917053885] [2021-11-12 23:43:33,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:33,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:43:33,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:33,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:43:33,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:43:33,619 INFO L87 Difference]: Start difference. First operand 19 states and 20 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) [2021-11-12 23:43:33,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:33,661 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-11-12 23:43:33,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:43:33,662 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 [2021-11-12 23:43:33,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:33,662 INFO L225 Difference]: With dead ends: 24 [2021-11-12 23:43:33,663 INFO L226 Difference]: Without dead ends: 23 [2021-11-12 23:43:33,663 INFO L932 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 [2021-11-12 23:43:33,665 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.52ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.81ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:33,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 14 Unknown, 0 Unchecked, 1.52ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 29.81ms Time] [2021-11-12 23:43:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-12 23:43:33,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-11-12 23:43:33,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:33,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-11-12 23:43:33,672 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 6 [2021-11-12 23:43:33,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:33,679 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-11-12 23:43:33,680 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) [2021-11-12 23:43:33,680 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-11-12 23:43:33,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 23:43:33,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:33,681 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:33,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 23:43:33,681 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:43:33,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:33,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1692434816, now seen corresponding path program 1 times [2021-11-12 23:43:33,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:33,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246296591] [2021-11-12 23:43:33,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:33,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:33,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:33,739 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:33,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246296591] [2021-11-12 23:43:33,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246296591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:33,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:33,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-12 23:43:33,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453621794] [2021-11-12 23:43:33,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:33,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:43:33,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:33,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:43:33,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:43:33,743 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:33,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:33,788 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-11-12 23:43:33,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:43:33,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-12 23:43:33,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:33,790 INFO L225 Difference]: With dead ends: 30 [2021-11-12 23:43:33,790 INFO L226 Difference]: Without dead ends: 28 [2021-11-12 23:43:33,804 INFO L932 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 [2021-11-12 23:43:33,806 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.54ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:33,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 14 Unknown, 0 Unchecked, 1.54ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 27.50ms Time] [2021-11-12 23:43:33,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-12 23:43:33,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2021-11-12 23:43:33,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 25 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) [2021-11-12 23:43:33,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-11-12 23:43:33,813 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2021-11-12 23:43:33,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:33,814 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-11-12 23:43:33,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:33,814 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-11-12 23:43:33,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-12 23:43:33,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:33,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:33,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 23:43:33,816 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:43:33,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:33,817 INFO L85 PathProgramCache]: Analyzing trace with hash 704600376, now seen corresponding path program 1 times [2021-11-12 23:43:33,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:33,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544271911] [2021-11-12 23:43:33,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:33,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:33,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:43:33,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:33,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544271911] [2021-11-12 23:43:33,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544271911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:33,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:33,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:43:33,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919548001] [2021-11-12 23:43:33,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:33,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:43:33,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:33,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:43:33,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:43:33,850 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:33,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:33,870 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-11-12 23:43:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:43:33,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-12 23:43:33,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:33,872 INFO L225 Difference]: With dead ends: 27 [2021-11-12 23:43:33,872 INFO L226 Difference]: Without dead ends: 26 [2021-11-12 23:43:33,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:43:33,874 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.63ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.18ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:33,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 15 Unknown, 0 Unchecked, 0.63ms Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 15.18ms Time] [2021-11-12 23:43:33,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-12 23:43:33,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-12 23:43:33,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-11-12 23:43:33,885 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 10 [2021-11-12 23:43:33,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:33,885 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-11-12 23:43:33,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:33,886 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-11-12 23:43:33,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:43:33,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:33,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:33,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 23:43:33,900 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:43:33,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:33,901 INFO L85 PathProgramCache]: Analyzing trace with hash 367775243, now seen corresponding path program 1 times [2021-11-12 23:43:33,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:33,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937457443] [2021-11-12 23:43:33,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:33,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:33,961 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:33,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937457443] [2021-11-12 23:43:33,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937457443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:33,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:33,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:43:33,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399625177] [2021-11-12 23:43:33,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:33,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:43:33,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:33,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:43:33,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:43:33,967 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:34,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:34,005 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-11-12 23:43:34,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:43:34,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-12 23:43:34,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:34,007 INFO L225 Difference]: With dead ends: 26 [2021-11-12 23:43:34,007 INFO L226 Difference]: Without dead ends: 25 [2021-11-12 23:43:34,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:43:34,009 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.83ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.37ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:34,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.83ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 32.37ms Time] [2021-11-12 23:43:34,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-12 23:43:34,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-12 23:43:34,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:34,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-11-12 23:43:34,015 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 11 [2021-11-12 23:43:34,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:34,016 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-11-12 23:43:34,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:34,016 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-11-12 23:43:34,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:43:34,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:34,017 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2021-11-12 23:43:34,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-12 23:43:34,018 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:43:34,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:34,018 INFO L85 PathProgramCache]: Analyzing trace with hash 366507140, now seen corresponding path program 1 times [2021-11-12 23:43:34,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:34,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494051235] [2021-11-12 23:43:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:34,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:34,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:34,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494051235] [2021-11-12 23:43:34,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494051235] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:43:34,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588792963] [2021-11-12 23:43:34,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:34,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:43:34,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:43:34,089 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:43:34,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 23:43:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:34,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:43:34,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:34,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:34,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588792963] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:43:34,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1860277130] [2021-11-12 23:43:34,298 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 23:43:34,299 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:43:34,307 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:43:34,314 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:43:34,314 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:43:34,358 INFO L180 QuantifierPusher]: treesize reduction 15, result has 67.4 percent of original size [2021-11-12 23:43:34,377 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:43:34,386 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.4 percent of original size [2021-11-12 23:43:34,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:43:34,407 INFO L180 QuantifierPusher]: treesize reduction 13, result has 71.7 percent of original size [2021-11-12 23:43:34,414 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:43:34,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:34,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:34,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:34,536 INFO L180 QuantifierPusher]: treesize reduction 11, result has 87.9 percent of original size [2021-11-12 23:43:34,552 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-12 23:43:34,563 INFO L180 QuantifierPusher]: treesize reduction 17, result has 82.1 percent of original size [2021-11-12 23:43:34,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-12 23:43:34,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:34,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:34,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:34,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:34,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:34,648 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-11-12 23:43:34,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:34,663 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:43:34,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:34,677 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-11-12 23:43:34,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:34,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:34,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:34,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:34,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:34,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:34,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:34,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:34,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:34,788 INFO L180 QuantifierPusher]: treesize reduction 15, result has 87.1 percent of original size [2021-11-12 23:43:34,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-12 23:43:34,798 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:43:35,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:43:35,317 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:43:35,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-12 23:43:35,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567864171] [2021-11-12 23:43:35,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:43:35,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:43:35,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:35,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:43:35,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:43:35,320 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:35,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:35,396 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2021-11-12 23:43:35,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:43:35,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-12 23:43:35,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:35,401 INFO L225 Difference]: With dead ends: 69 [2021-11-12 23:43:35,401 INFO L226 Difference]: Without dead ends: 67 [2021-11-12 23:43:35,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:43:35,407 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 40 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.16ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.32ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:35,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 40 Invalid, 49 Unknown, 0 Unchecked, 2.16ms Time], IncrementalHoareTripleChecker [18 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 51.32ms Time] [2021-11-12 23:43:35,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-12 23:43:35,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2021-11-12 23:43:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:35,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-11-12 23:43:35,426 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 11 [2021-11-12 23:43:35,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:35,427 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-11-12 23:43:35,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:35,427 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-11-12 23:43:35,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 23:43:35,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:35,428 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:35,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:35,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-12 23:43:35,652 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:43:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:35,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2146418545, now seen corresponding path program 1 times [2021-11-12 23:43:35,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:35,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903190099] [2021-11-12 23:43:35,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:35,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:43:35,704 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:35,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903190099] [2021-11-12 23:43:35,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903190099] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:43:35,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257666532] [2021-11-12 23:43:35,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:35,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:43:35,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:43:35,714 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:43:35,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-12 23:43:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:35,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:43:35,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:43:35,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:43:35,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257666532] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:43:35,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1318831909] [2021-11-12 23:43:35,827 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-12 23:43:35,827 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:43:35,828 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:43:35,828 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:43:35,828 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:43:35,841 INFO L180 QuantifierPusher]: treesize reduction 15, result has 67.4 percent of original size [2021-11-12 23:43:35,844 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-12 23:43:35,846 INFO L180 QuantifierPusher]: treesize reduction 11, result has 71.1 percent of original size [2021-11-12 23:43:35,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:43:35,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:35,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:35,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:35,878 INFO L180 QuantifierPusher]: treesize reduction 18, result has 76.9 percent of original size [2021-11-12 23:43:35,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-12 23:43:35,894 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.1 percent of original size [2021-11-12 23:43:35,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:43:35,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:35,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:35,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:35,933 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:43:35,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:35,942 INFO L180 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-11-12 23:43:35,946 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 23:43:35,956 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.3 percent of original size [2021-11-12 23:43:35,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 23:43:35,964 INFO L180 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size [2021-11-12 23:43:35,968 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:43:35,973 INFO L180 QuantifierPusher]: treesize reduction 13, result has 73.5 percent of original size [2021-11-12 23:43:35,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:43:35,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:35,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:35,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,002 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:36,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 23:43:36,013 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.4 percent of original size [2021-11-12 23:43:36,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-12 23:43:36,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,049 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:36,051 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:36,054 INFO L180 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size [2021-11-12 23:43:36,059 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:43:36,067 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:36,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:36,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:36,164 INFO L180 QuantifierPusher]: treesize reduction 4, result has 95.7 percent of original size [2021-11-12 23:43:36,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-12 23:43:36,180 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:43:36,183 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:36,185 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:43:36,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1318831909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:36,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:43:36,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [3, 3, 3] total 14 [2021-11-12 23:43:36,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118096327] [2021-11-12 23:43:36,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:36,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 23:43:36,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:36,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 23:43:36,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:43:36,619 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:37,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:37,480 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2021-11-12 23:43:37,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:43:37,480 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-12 23:43:37,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:37,481 INFO L225 Difference]: With dead ends: 56 [2021-11-12 23:43:37,481 INFO L226 Difference]: Without dead ends: 54 [2021-11-12 23:43:37,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:43:37,482 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.79ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:37,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 117 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [23 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 93.79ms Time] [2021-11-12 23:43:37,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-12 23:43:37,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2021-11-12 23:43:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:37,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-11-12 23:43:37,489 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 15 [2021-11-12 23:43:37,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:37,489 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-11-12 23:43:37,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:37,490 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-11-12 23:43:37,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 23:43:37,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:37,490 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:37,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:37,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:43:37,691 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:43:37,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:37,692 INFO L85 PathProgramCache]: Analyzing trace with hash -481704650, now seen corresponding path program 1 times [2021-11-12 23:43:37,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:37,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004238618] [2021-11-12 23:43:37,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:37,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:37,738 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:37,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004238618] [2021-11-12 23:43:37,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004238618] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:43:37,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657421373] [2021-11-12 23:43:37,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:37,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:43:37,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:43:37,748 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:43:37,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-12 23:43:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:37,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:43:37,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:37,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:37,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:37,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657421373] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:43:37,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1888066517] [2021-11-12 23:43:37,898 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-12 23:43:37,898 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:43:37,899 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:43:37,899 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:43:37,899 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:43:37,925 INFO L180 QuantifierPusher]: treesize reduction 15, result has 67.4 percent of original size [2021-11-12 23:43:37,927 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-12 23:43:37,929 INFO L180 QuantifierPusher]: treesize reduction 11, result has 71.1 percent of original size [2021-11-12 23:43:37,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:43:37,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:37,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:37,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:37,964 INFO L180 QuantifierPusher]: treesize reduction 18, result has 76.9 percent of original size [2021-11-12 23:43:37,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-12 23:43:37,972 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.1 percent of original size [2021-11-12 23:43:37,975 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:43:37,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:37,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:37,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:37,991 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:43:37,995 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:37,997 INFO L180 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-11-12 23:43:37,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 23:43:38,004 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.3 percent of original size [2021-11-12 23:43:38,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 23:43:38,010 INFO L180 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size [2021-11-12 23:43:38,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:43:38,014 INFO L180 QuantifierPusher]: treesize reduction 13, result has 73.5 percent of original size [2021-11-12 23:43:38,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:43:38,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:38,037 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 23:43:38,041 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.4 percent of original size [2021-11-12 23:43:38,044 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-12 23:43:38,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,058 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:38,061 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:38,063 INFO L180 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size [2021-11-12 23:43:38,065 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:43:38,072 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:38,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:38,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:38,124 INFO L180 QuantifierPusher]: treesize reduction 4, result has 95.7 percent of original size [2021-11-12 23:43:38,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-12 23:43:38,133 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:43:38,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:38,136 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:43:38,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:43:38,519 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:43:38,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-12 23:43:38,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703747662] [2021-11-12 23:43:38,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:43:38,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:43:38,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:38,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:43:38,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:43:38,521 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:38,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:38,551 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2021-11-12 23:43:38,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:43:38,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-12 23:43:38,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:38,553 INFO L225 Difference]: With dead ends: 54 [2021-11-12 23:43:38,553 INFO L226 Difference]: Without dead ends: 53 [2021-11-12 23:43:38,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:43:38,554 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.76ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:38,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 27 Invalid, 25 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 24.76ms Time] [2021-11-12 23:43:38,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-12 23:43:38,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-12 23:43:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:38,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-11-12 23:43:38,562 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 18 [2021-11-12 23:43:38,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:38,562 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-11-12 23:43:38,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:38,563 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-11-12 23:43:38,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-12 23:43:38,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:38,564 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1] [2021-11-12 23:43:38,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:38,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:43:38,788 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:43:38,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:38,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1672464692, now seen corresponding path program 2 times [2021-11-12 23:43:38,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:38,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312798392] [2021-11-12 23:43:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:38,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:38,838 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:38,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:38,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312798392] [2021-11-12 23:43:38,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312798392] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:43:38,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964349119] [2021-11-12 23:43:38,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:43:38,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:43:38,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:43:38,840 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:43:38,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-12 23:43:38,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-12 23:43:38,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:43:38,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:43:38,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:38,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:39,033 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:39,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964349119] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:43:39,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1815180625] [2021-11-12 23:43:39,036 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 23:43:39,036 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:43:39,037 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:43:39,037 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:43:39,037 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:43:39,043 INFO L180 QuantifierPusher]: treesize reduction 15, result has 67.4 percent of original size [2021-11-12 23:43:39,046 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-12 23:43:39,048 INFO L180 QuantifierPusher]: treesize reduction 11, result has 71.1 percent of original size [2021-11-12 23:43:39,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:43:39,051 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.5 percent of original size [2021-11-12 23:43:39,053 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:43:39,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:39,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:39,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:39,100 INFO L180 QuantifierPusher]: treesize reduction 14, result has 84.3 percent of original size [2021-11-12 23:43:39,103 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:43:39,106 INFO L180 QuantifierPusher]: treesize reduction 17, result has 81.1 percent of original size [2021-11-12 23:43:39,114 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:43:39,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:39,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:39,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:39,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:39,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:39,135 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-11-12 23:43:39,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:39,138 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:43:39,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:39,144 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-11-12 23:43:39,147 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:39,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:39,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:39,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:39,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:39,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:39,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:39,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:39,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:39,184 INFO L180 QuantifierPusher]: treesize reduction 15, result has 87.1 percent of original size [2021-11-12 23:43:39,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-12 23:43:39,189 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:43:39,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:43:39,649 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:43:39,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-12 23:43:39,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431263368] [2021-11-12 23:43:39,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:43:39,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:43:39,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:39,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:43:39,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:43:39,651 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:39,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:39,757 INFO L93 Difference]: Finished difference Result 229 states and 246 transitions. [2021-11-12 23:43:39,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:43:39,757 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-12 23:43:39,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:39,759 INFO L225 Difference]: With dead ends: 229 [2021-11-12 23:43:39,759 INFO L226 Difference]: Without dead ends: 228 [2021-11-12 23:43:39,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:43:39,760 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 105 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.93ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.24ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:39,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 71 Invalid, 92 Unknown, 0 Unchecked, 2.93ms Time], IncrementalHoareTripleChecker [31 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 80.24ms Time] [2021-11-12 23:43:39,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-12 23:43:39,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 83. [2021-11-12 23:43:39,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 82 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:39,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2021-11-12 23:43:39,771 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 26 [2021-11-12 23:43:39,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:39,772 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2021-11-12 23:43:39,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:39,772 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2021-11-12 23:43:39,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:43:39,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:39,773 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:39,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:39,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:43:40,000 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:43:40,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:40,000 INFO L85 PathProgramCache]: Analyzing trace with hash -919616723, now seen corresponding path program 2 times [2021-11-12 23:43:40,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:40,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680020516] [2021-11-12 23:43:40,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:40,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:40,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:40,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680020516] [2021-11-12 23:43:40,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680020516] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:43:40,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560301894] [2021-11-12 23:43:40,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:43:40,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:43:40,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:43:40,053 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:43:40,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-12 23:43:40,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-12 23:43:40,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:43:40,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:43:40,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:40,184 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:40,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:40,294 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:40,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560301894] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:43:40,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [995454254] [2021-11-12 23:43:40,297 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-12 23:43:40,297 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:43:40,297 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:43:40,298 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:43:40,298 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:43:40,306 INFO L180 QuantifierPusher]: treesize reduction 15, result has 67.4 percent of original size [2021-11-12 23:43:40,309 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:43:40,310 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.4 percent of original size [2021-11-12 23:43:40,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:43:40,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,344 INFO L180 QuantifierPusher]: treesize reduction 18, result has 79.1 percent of original size [2021-11-12 23:43:40,352 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-12 23:43:40,356 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.8 percent of original size [2021-11-12 23:43:40,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:43:40,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,380 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:43:40,382 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:40,384 INFO L180 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-11-12 23:43:40,386 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 23:43:40,396 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.3 percent of original size [2021-11-12 23:43:40,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 23:43:40,400 INFO L180 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size [2021-11-12 23:43:40,404 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:43:40,407 INFO L180 QuantifierPusher]: treesize reduction 13, result has 73.5 percent of original size [2021-11-12 23:43:40,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:43:40,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,428 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:40,432 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 23:43:40,435 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.4 percent of original size [2021-11-12 23:43:40,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-12 23:43:40,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,457 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:40,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:40,464 INFO L180 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size [2021-11-12 23:43:40,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:43:40,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:40,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:40,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:40,526 INFO L180 QuantifierPusher]: treesize reduction 4, result has 95.7 percent of original size [2021-11-12 23:43:40,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-12 23:43:40,536 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:43:40,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:40,539 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:43:41,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:43:41,003 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:43:41,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-12 23:43:41,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326924965] [2021-11-12 23:43:41,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:43:41,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:43:41,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:41,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:43:41,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:43:41,005 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:41,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:41,058 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2021-11-12 23:43:41,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:43:41,059 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:43:41,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:41,060 INFO L225 Difference]: With dead ends: 114 [2021-11-12 23:43:41,060 INFO L226 Difference]: Without dead ends: 113 [2021-11-12 23:43:41,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 77 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:43:41,061 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.67ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.07ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:41,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 45 Invalid, 44 Unknown, 0 Unchecked, 0.67ms Time], IncrementalHoareTripleChecker [10 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 44.07ms Time] [2021-11-12 23:43:41,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-12 23:43:41,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-11-12 23:43:41,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.1081081081081081) internal successors, (123), 112 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2021-11-12 23:43:41,071 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 33 [2021-11-12 23:43:41,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:41,071 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2021-11-12 23:43:41,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:41,072 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2021-11-12 23:43:41,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-12 23:43:41,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:41,074 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1] [2021-11-12 23:43:41,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:41,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:43:41,288 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:43:41,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:41,288 INFO L85 PathProgramCache]: Analyzing trace with hash 996441908, now seen corresponding path program 3 times [2021-11-12 23:43:41,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:41,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575330935] [2021-11-12 23:43:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:41,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:41,450 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:41,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575330935] [2021-11-12 23:43:41,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575330935] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:43:41,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977652532] [2021-11-12 23:43:41,451 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:43:41,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:43:41,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:43:41,453 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:43:41,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-12 23:43:41,491 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 23:43:41,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:43:41,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 23:43:41,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:41,635 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:41,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:41,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977652532] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:43:41,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1229263637] [2021-11-12 23:43:41,954 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 23:43:41,954 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:43:41,954 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:43:41,954 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:43:41,954 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:43:41,960 INFO L180 QuantifierPusher]: treesize reduction 15, result has 67.4 percent of original size [2021-11-12 23:43:41,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:43:41,964 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.4 percent of original size [2021-11-12 23:43:41,965 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 23:43:41,967 INFO L180 QuantifierPusher]: treesize reduction 15, result has 68.8 percent of original size [2021-11-12 23:43:41,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:43:41,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:41,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:41,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:41,983 INFO L180 QuantifierPusher]: treesize reduction 11, result has 87.9 percent of original size [2021-11-12 23:43:41,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-12 23:43:41,988 INFO L180 QuantifierPusher]: treesize reduction 17, result has 82.1 percent of original size [2021-11-12 23:43:41,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-12 23:43:41,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:41,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:42,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:42,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:42,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:42,009 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-11-12 23:43:42,011 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:42,013 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:43:42,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:42,017 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-11-12 23:43:42,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:42,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:42,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:42,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:42,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:42,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:42,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:42,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:42,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:42,047 INFO L180 QuantifierPusher]: treesize reduction 15, result has 87.1 percent of original size [2021-11-12 23:43:42,050 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-12 23:43:42,052 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:43:42,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:43:42,665 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:43:42,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2021-11-12 23:43:42,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883032522] [2021-11-12 23:43:42,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:43:42,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-12 23:43:42,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:42,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-12 23:43:42,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=555, Unknown=0, NotChecked=0, Total=870 [2021-11-12 23:43:42,667 INFO L87 Difference]: Start difference. First operand 113 states and 123 transitions. Second operand has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:42,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:42,888 INFO L93 Difference]: Finished difference Result 829 states and 864 transitions. [2021-11-12 23:43:42,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-12 23:43:42,889 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 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 56 [2021-11-12 23:43:42,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:42,894 INFO L225 Difference]: With dead ends: 829 [2021-11-12 23:43:42,894 INFO L226 Difference]: Without dead ends: 828 [2021-11-12 23:43:42,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 138 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=315, Invalid=555, Unknown=0, NotChecked=0, Total=870 [2021-11-12 23:43:42,896 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 372 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.45ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 139.27ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:42,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 143 Invalid, 205 Unknown, 0 Unchecked, 3.45ms Time], IncrementalHoareTripleChecker [85 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 139.27ms Time] [2021-11-12 23:43:42,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-11-12 23:43:42,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 173. [2021-11-12 23:43:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 171 states have (on average 1.1403508771929824) internal successors, (195), 172 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:42,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 195 transitions. [2021-11-12 23:43:42,922 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 195 transitions. Word has length 56 [2021-11-12 23:43:42,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:42,924 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 195 transitions. [2021-11-12 23:43:42,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:42,925 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 195 transitions. [2021-11-12 23:43:42,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-12 23:43:42,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:42,933 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:42,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:43,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable120 [2021-11-12 23:43:43,160 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:43:43,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash 173255693, now seen corresponding path program 3 times [2021-11-12 23:43:43,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:43,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535371935] [2021-11-12 23:43:43,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:43,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:43,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:43,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535371935] [2021-11-12 23:43:43,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535371935] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:43:43,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643244085] [2021-11-12 23:43:43,334 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:43:43,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:43:43,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:43:43,335 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:43:43,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-12 23:43:43,376 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 23:43:43,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:43:43,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 23:43:43,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:43,547 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:43,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:43,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643244085] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:43:43,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1763646326] [2021-11-12 23:43:43,849 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-12 23:43:43,849 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:43:43,849 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:43:43,850 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:43:43,850 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:43:43,857 INFO L180 QuantifierPusher]: treesize reduction 15, result has 67.4 percent of original size [2021-11-12 23:43:43,859 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-12 23:43:43,860 INFO L180 QuantifierPusher]: treesize reduction 11, result has 71.1 percent of original size [2021-11-12 23:43:43,861 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:43:43,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,872 INFO L180 QuantifierPusher]: treesize reduction 18, result has 76.9 percent of original size [2021-11-12 23:43:43,874 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-12 23:43:43,876 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.1 percent of original size [2021-11-12 23:43:43,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:43:43,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,891 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:43:43,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:43,893 INFO L180 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-11-12 23:43:43,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 23:43:43,899 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.3 percent of original size [2021-11-12 23:43:43,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 23:43:43,902 INFO L180 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size [2021-11-12 23:43:43,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:43:43,907 INFO L180 QuantifierPusher]: treesize reduction 13, result has 73.5 percent of original size [2021-11-12 23:43:43,908 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:43:43,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,919 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:43,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 23:43:43,924 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.4 percent of original size [2021-11-12 23:43:43,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-12 23:43:43,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,945 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:43,946 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:43,947 INFO L180 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size [2021-11-12 23:43:43,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:43:43,951 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:43,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:43,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:43,991 INFO L180 QuantifierPusher]: treesize reduction 4, result has 95.7 percent of original size [2021-11-12 23:43:43,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-12 23:43:43,997 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:43:43,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:44,001 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:43:44,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:43:44,677 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:43:44,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2021-11-12 23:43:44,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178096531] [2021-11-12 23:43:44,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:43:44,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-12 23:43:44,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:44,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-12 23:43:44,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=713, Unknown=0, NotChecked=0, Total=1122 [2021-11-12 23:43:44,680 INFO L87 Difference]: Start difference. First operand 173 states and 195 transitions. Second operand has 24 states, 23 states have (on average 5.478260869565218) internal successors, (126), 23 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:44,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:44,756 INFO L93 Difference]: Finished difference Result 234 states and 267 transitions. [2021-11-12 23:43:44,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-12 23:43:44,756 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.478260869565218) internal successors, (126), 23 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-12 23:43:44,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:44,757 INFO L225 Difference]: With dead ends: 234 [2021-11-12 23:43:44,758 INFO L226 Difference]: Without dead ends: 233 [2021-11-12 23:43:44,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 155 SyntacticMatches, 12 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=409, Invalid=713, Unknown=0, NotChecked=0, Total=1122 [2021-11-12 23:43:44,759 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.07ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.90ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:44,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 81 Invalid, 76 Unknown, 0 Unchecked, 1.07ms Time], IncrementalHoareTripleChecker [17 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 58.90ms Time] [2021-11-12 23:43:44,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-12 23:43:44,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-11-12 23:43:44,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 231 states have (on average 1.103896103896104) internal successors, (255), 232 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:44,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 255 transitions. [2021-11-12 23:43:44,768 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 255 transitions. Word has length 63 [2021-11-12 23:43:44,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:44,769 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 255 transitions. [2021-11-12 23:43:44,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.478260869565218) internal successors, (126), 23 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 255 transitions. [2021-11-12 23:43:44,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-12 23:43:44,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:44,773 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1] [2021-11-12 23:43:44,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:44,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2021-11-12 23:43:45,000 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:43:45,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:45,000 INFO L85 PathProgramCache]: Analyzing trace with hash -263820492, now seen corresponding path program 4 times [2021-11-12 23:43:45,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:45,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216249479] [2021-11-12 23:43:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:45,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:45,378 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:45,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216249479] [2021-11-12 23:43:45,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216249479] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:43:45,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216535723] [2021-11-12 23:43:45,378 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 23:43:45,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:43:45,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:43:45,379 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:43:45,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-12 23:43:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:45,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:43:45,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:45,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:46,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216535723] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:43:46,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [447154229] [2021-11-12 23:43:46,590 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 23:43:46,590 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:43:46,590 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:43:46,591 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:43:46,591 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:43:46,596 INFO L180 QuantifierPusher]: treesize reduction 15, result has 67.4 percent of original size [2021-11-12 23:43:46,598 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-12 23:43:46,599 INFO L180 QuantifierPusher]: treesize reduction 11, result has 71.1 percent of original size [2021-11-12 23:43:46,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:43:46,601 INFO L180 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-11-12 23:43:46,603 INFO L185 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-11-12 23:43:46,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:46,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:46,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:46,617 INFO L180 QuantifierPusher]: treesize reduction 20, result has 76.2 percent of original size [2021-11-12 23:43:46,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-12 23:43:46,621 INFO L180 QuantifierPusher]: treesize reduction 17, result has 78.5 percent of original size [2021-11-12 23:43:46,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-12 23:43:46,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:46,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:46,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:46,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:46,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:46,634 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-11-12 23:43:46,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:46,636 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:43:46,637 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:46,640 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-11-12 23:43:46,641 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:46,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:46,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:46,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:46,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:46,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:46,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:46,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:46,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:46,671 INFO L180 QuantifierPusher]: treesize reduction 15, result has 87.1 percent of original size [2021-11-12 23:43:46,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-12 23:43:46,676 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:43:47,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:43:47,760 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:43:47,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2021-11-12 23:43:47,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757420995] [2021-11-12 23:43:47,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:43:47,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-12 23:43:47,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:47,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-12 23:43:47,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1191, Invalid=1671, Unknown=0, NotChecked=0, Total=2862 [2021-11-12 23:43:47,764 INFO L87 Difference]: Start difference. First operand 233 states and 255 transitions. Second operand has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 47 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:48,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:48,306 INFO L93 Difference]: Finished difference Result 3109 states and 3180 transitions. [2021-11-12 23:43:48,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-12 23:43:48,306 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 47 states have internal predecessors, (232), 0 states have call successors, (0), 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 116 [2021-11-12 23:43:48,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:48,321 INFO L225 Difference]: With dead ends: 3109 [2021-11-12 23:43:48,321 INFO L226 Difference]: Without dead ends: 3108 [2021-11-12 23:43:48,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 294 SyntacticMatches, 23 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1191, Invalid=1671, Unknown=0, NotChecked=0, Total=2862 [2021-11-12 23:43:48,326 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 864 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 200.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.90ms SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 256.25ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:48,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 287 Invalid, 438 Unknown, 0 Unchecked, 5.90ms Time], IncrementalHoareTripleChecker [198 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 256.25ms Time] [2021-11-12 23:43:48,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2021-11-12 23:43:48,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 353. [2021-11-12 23:43:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 351 states have (on average 1.1367521367521367) internal successors, (399), 352 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 399 transitions. [2021-11-12 23:43:48,356 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 399 transitions. Word has length 116 [2021-11-12 23:43:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:48,357 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 399 transitions. [2021-11-12 23:43:48,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 47 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:48,357 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 399 transitions. [2021-11-12 23:43:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-12 23:43:48,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:48,364 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:48,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:48,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:43:48,584 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:43:48,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:48,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1603983923, now seen corresponding path program 4 times [2021-11-12 23:43:48,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:48,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329042377] [2021-11-12 23:43:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:48,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:48,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:48,917 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:48,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329042377] [2021-11-12 23:43:48,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329042377] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:43:48,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835199416] [2021-11-12 23:43:48,918 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 23:43:48,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:43:48,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:43:48,920 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:43:48,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-12 23:43:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:48,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-12 23:43:48,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:49,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:50,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835199416] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:43:50,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [439175412] [2021-11-12 23:43:50,113 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-12 23:43:50,113 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:43:50,113 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:43:50,114 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:43:50,114 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:43:50,138 INFO L180 QuantifierPusher]: treesize reduction 15, result has 67.4 percent of original size [2021-11-12 23:43:50,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:43:50,141 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.4 percent of original size [2021-11-12 23:43:50,142 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 23:43:50,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,152 INFO L180 QuantifierPusher]: treesize reduction 18, result has 77.5 percent of original size [2021-11-12 23:43:50,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-12 23:43:50,156 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-11-12 23:43:50,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-12 23:43:50,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,171 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:43:50,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:50,173 INFO L180 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-11-12 23:43:50,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 23:43:50,177 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:43:50,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:50,182 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.3 percent of original size [2021-11-12 23:43:50,183 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 23:43:50,185 INFO L180 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size [2021-11-12 23:43:50,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:43:50,187 INFO L180 QuantifierPusher]: treesize reduction 13, result has 73.5 percent of original size [2021-11-12 23:43:50,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:43:50,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:50,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 23:43:50,202 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.4 percent of original size [2021-11-12 23:43:50,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-12 23:43:50,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:50,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:50,218 INFO L180 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size [2021-11-12 23:43:50,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:43:50,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:50,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:50,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:50,255 INFO L180 QuantifierPusher]: treesize reduction 4, result has 95.7 percent of original size [2021-11-12 23:43:50,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-12 23:43:50,259 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:43:51,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:43:51,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:43:51,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2021-11-12 23:43:51,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087602878] [2021-11-12 23:43:51,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:43:51,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-12 23:43:51,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:51,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-12 23:43:51,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1381, Invalid=1925, Unknown=0, NotChecked=0, Total=3306 [2021-11-12 23:43:51,469 INFO L87 Difference]: Start difference. First operand 353 states and 399 transitions. Second operand has 48 states, 47 states have (on average 5.23404255319149) internal successors, (246), 47 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:51,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:51,621 INFO L93 Difference]: Finished difference Result 474 states and 543 transitions. [2021-11-12 23:43:51,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-12 23:43:51,622 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.23404255319149) internal successors, (246), 47 states have internal predecessors, (246), 0 states have call successors, (0), 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 123 [2021-11-12 23:43:51,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:51,627 INFO L225 Difference]: With dead ends: 474 [2021-11-12 23:43:51,627 INFO L226 Difference]: Without dead ends: 473 [2021-11-12 23:43:51,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 311 SyntacticMatches, 24 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2676 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1381, Invalid=1925, Unknown=0, NotChecked=0, Total=3306 [2021-11-12 23:43:51,637 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.21ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.60ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:51,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 153 Invalid, 138 Unknown, 0 Unchecked, 1.21ms Time], IncrementalHoareTripleChecker [31 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 106.60ms Time] [2021-11-12 23:43:51,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-12 23:43:51,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2021-11-12 23:43:51,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 471 states have (on average 1.1019108280254777) internal successors, (519), 472 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:51,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 519 transitions. [2021-11-12 23:43:51,654 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 519 transitions. Word has length 123 [2021-11-12 23:43:51,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:51,654 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 519 transitions. [2021-11-12 23:43:51,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.23404255319149) internal successors, (246), 47 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:51,655 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 519 transitions. [2021-11-12 23:43:51,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-12 23:43:51,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:51,659 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1] [2021-11-12 23:43:51,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:51,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2021-11-12 23:43:51,884 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:43:51,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:51,884 INFO L85 PathProgramCache]: Analyzing trace with hash -697547980, now seen corresponding path program 5 times [2021-11-12 23:43:51,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:51,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037353395] [2021-11-12 23:43:51,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:51,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:52,895 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:52,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:52,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037353395] [2021-11-12 23:43:52,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037353395] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:43:52,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092752184] [2021-11-12 23:43:52,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:43:52,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:43:52,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:43:52,904 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:43:52,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-12 23:43:53,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-12 23:43:53,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:43:53,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-12 23:43:53,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:53,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:56,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092752184] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:43:56,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2058672180] [2021-11-12 23:43:56,180 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 23:43:56,180 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:43:56,181 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:43:56,181 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:43:56,181 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:43:56,186 INFO L180 QuantifierPusher]: treesize reduction 15, result has 67.4 percent of original size [2021-11-12 23:43:56,188 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-12 23:43:56,190 INFO L180 QuantifierPusher]: treesize reduction 11, result has 71.1 percent of original size [2021-11-12 23:43:56,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:43:56,195 INFO L180 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-11-12 23:43:56,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:43:56,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:56,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:56,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:56,206 INFO L180 QuantifierPusher]: treesize reduction 14, result has 84.3 percent of original size [2021-11-12 23:43:56,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:43:56,210 INFO L180 QuantifierPusher]: treesize reduction 17, result has 81.1 percent of original size [2021-11-12 23:43:56,212 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:43:56,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:56,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:56,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:56,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:56,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:56,227 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-11-12 23:43:56,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:56,229 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:43:56,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:56,234 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-11-12 23:43:56,235 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:43:56,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:56,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:56,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:56,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:56,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:56,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:56,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:56,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:43:56,256 INFO L180 QuantifierPusher]: treesize reduction 15, result has 87.1 percent of original size [2021-11-12 23:43:56,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-12 23:43:56,260 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:43:58,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:43:58,809 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:43:58,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2021-11-12 23:43:58,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579335991] [2021-11-12 23:43:58,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:43:58,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-12 23:43:58,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:58,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-12 23:43:58,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4671, Invalid=5631, Unknown=0, NotChecked=0, Total=10302 [2021-11-12 23:43:58,817 INFO L87 Difference]: Start difference. First operand 473 states and 519 transitions. Second operand has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 95 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:44:01,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:01,247 INFO L93 Difference]: Finished difference Result 11989 states and 12132 transitions. [2021-11-12 23:44:01,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-12 23:44:01,248 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 95 states have internal predecessors, (472), 0 states have call successors, (0), 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 236 [2021-11-12 23:44:01,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:01,304 INFO L225 Difference]: With dead ends: 11989 [2021-11-12 23:44:01,304 INFO L226 Difference]: Without dead ends: 11988 [2021-11-12 23:44:01,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 606 SyntacticMatches, 47 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7607 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4671, Invalid=5631, Unknown=0, NotChecked=0, Total=10302 [2021-11-12 23:44:01,317 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1855 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 407.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.69ms SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 614.27ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:01,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1855 Valid, 575 Invalid, 892 Unknown, 0 Unchecked, 10.69ms Time], IncrementalHoareTripleChecker [412 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 614.27ms Time] [2021-11-12 23:44:01,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11988 states. [2021-11-12 23:44:01,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11988 to 713. [2021-11-12 23:44:01,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 711 states have (on average 1.1350210970464134) internal successors, (807), 712 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:44:01,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 807 transitions. [2021-11-12 23:44:01,403 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 807 transitions. Word has length 236 [2021-11-12 23:44:01,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:01,404 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 807 transitions. [2021-11-12 23:44:01,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 95 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:44:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 807 transitions. [2021-11-12 23:44:01,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-12 23:44:01,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:01,408 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:01,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:01,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable205 [2021-11-12 23:44:01,630 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:44:01,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:01,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1337375053, now seen corresponding path program 5 times [2021-11-12 23:44:01,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:44:01,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992390857] [2021-11-12 23:44:01,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:01,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:44:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:44:02,798 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:44:02,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992390857] [2021-11-12 23:44:02,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992390857] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:44:02,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375435786] [2021-11-12 23:44:02,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:44:02,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:44:02,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:44:02,800 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:44:02,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-12 23:44:02,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-12 23:44:02,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:44:02,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-12 23:44:02,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:44:03,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:44:06,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375435786] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:44:06,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1132065437] [2021-11-12 23:44:06,230 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-12 23:44:06,231 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:44:06,231 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:44:06,231 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:44:06,231 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:44:06,236 INFO L180 QuantifierPusher]: treesize reduction 15, result has 67.4 percent of original size [2021-11-12 23:44:06,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:44:06,238 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.4 percent of original size [2021-11-12 23:44:06,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:44:06,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,249 INFO L180 QuantifierPusher]: treesize reduction 18, result has 79.1 percent of original size [2021-11-12 23:44:06,254 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-12 23:44:06,255 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.8 percent of original size [2021-11-12 23:44:06,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:44:06,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,269 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:44:06,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:44:06,271 INFO L180 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-11-12 23:44:06,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 23:44:06,276 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:44:06,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:44:06,280 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.3 percent of original size [2021-11-12 23:44:06,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 23:44:06,282 INFO L180 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size [2021-11-12 23:44:06,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:44:06,284 INFO L180 QuantifierPusher]: treesize reduction 13, result has 73.5 percent of original size [2021-11-12 23:44:06,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:44:06,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,295 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:44:06,296 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 23:44:06,298 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.4 percent of original size [2021-11-12 23:44:06,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-12 23:44:06,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,308 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:44:06,309 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:44:06,310 INFO L180 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size [2021-11-12 23:44:06,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:44:06,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:44:06,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:44:06,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:06,343 INFO L180 QuantifierPusher]: treesize reduction 4, result has 95.7 percent of original size [2021-11-12 23:44:06,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-12 23:44:06,346 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:44:08,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:44:08,687 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:44:08,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2021-11-12 23:44:08,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376813449] [2021-11-12 23:44:08,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:44:08,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-12 23:44:08,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:44:08,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-12 23:44:08,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5053, Invalid=6077, Unknown=0, NotChecked=0, Total=11130 [2021-11-12 23:44:08,695 INFO L87 Difference]: Start difference. First operand 713 states and 807 transitions. Second operand has 96 states, 95 states have (on average 5.11578947368421) internal successors, (486), 95 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:44:09,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:09,054 INFO L93 Difference]: Finished difference Result 954 states and 1095 transitions. [2021-11-12 23:44:09,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-12 23:44:09,054 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.11578947368421) internal successors, (486), 95 states have internal predecessors, (486), 0 states have call successors, (0), 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 243 [2021-11-12 23:44:09,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:09,059 INFO L225 Difference]: With dead ends: 954 [2021-11-12 23:44:09,060 INFO L226 Difference]: Without dead ends: 953 [2021-11-12 23:44:09,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 623 SyntacticMatches, 48 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8868 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=5053, Invalid=6077, Unknown=0, NotChecked=0, Total=11130 [2021-11-12 23:44:09,065 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 137.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 207.26ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:09,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 297 Invalid, 256 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [52 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 207.26ms Time] [2021-11-12 23:44:09,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2021-11-12 23:44:09,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 953. [2021-11-12 23:44:09,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 951 states have (on average 1.1009463722397477) internal successors, (1047), 952 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:44:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1047 transitions. [2021-11-12 23:44:09,095 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1047 transitions. Word has length 243 [2021-11-12 23:44:09,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:09,096 INFO L470 AbstractCegarLoop]: Abstraction has 953 states and 1047 transitions. [2021-11-12 23:44:09,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.11578947368421) internal successors, (486), 95 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:44:09,097 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1047 transitions. [2021-11-12 23:44:09,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2021-11-12 23:44:09,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:09,108 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1] [2021-11-12 23:44:09,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:09,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:44:09,331 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:44:09,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:09,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2009074892, now seen corresponding path program 6 times [2021-11-12 23:44:09,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:44:09,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051819371] [2021-11-12 23:44:09,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:09,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:44:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:44:12,752 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:44:12,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051819371] [2021-11-12 23:44:12,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051819371] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:44:12,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795355838] [2021-11-12 23:44:12,753 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:44:12,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:44:12,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:44:12,755 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:44:12,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-12 23:44:12,875 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 23:44:12,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:44:12,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-12 23:44:12,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:44:13,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:23,054 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:44:23,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795355838] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:44:23,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1347886604] [2021-11-12 23:44:23,056 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 23:44:23,057 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:44:23,057 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:44:23,057 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:44:23,057 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:44:23,078 INFO L180 QuantifierPusher]: treesize reduction 15, result has 67.4 percent of original size [2021-11-12 23:44:23,079 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-12 23:44:23,080 INFO L180 QuantifierPusher]: treesize reduction 11, result has 71.1 percent of original size [2021-11-12 23:44:23,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:44:23,092 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.5 percent of original size [2021-11-12 23:44:23,093 INFO L185 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-11-12 23:44:23,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:23,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:23,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:23,104 INFO L180 QuantifierPusher]: treesize reduction 20, result has 76.2 percent of original size [2021-11-12 23:44:23,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-12 23:44:23,107 INFO L180 QuantifierPusher]: treesize reduction 17, result has 78.5 percent of original size [2021-11-12 23:44:23,108 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-12 23:44:23,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:23,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:23,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:23,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:23,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:23,131 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-11-12 23:44:23,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:44:23,133 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:44:23,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:44:23,136 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-11-12 23:44:23,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:44:23,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:23,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:23,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:23,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:23,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:23,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:23,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:23,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:44:23,158 INFO L180 QuantifierPusher]: treesize reduction 15, result has 87.1 percent of original size [2021-11-12 23:44:23,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-12 23:44:23,162 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:44:31,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:44:31,048 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:44:31,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2021-11-12 23:44:31,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271287298] [2021-11-12 23:44:31,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:44:31,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-12 23:44:31,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:44:31,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-12 23:44:31,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18543, Invalid=20463, Unknown=0, NotChecked=0, Total=39006 [2021-11-12 23:44:31,060 INFO L87 Difference]: Start difference. First operand 953 states and 1047 transitions. Second operand has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 191 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:44:49,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:49,889 INFO L93 Difference]: Finished difference Result 47029 states and 47316 transitions. [2021-11-12 23:44:49,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-12 23:44:49,889 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 191 states have internal predecessors, (952), 0 states have call successors, (0), 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 476 [2021-11-12 23:44:49,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:49,990 INFO L225 Difference]: With dead ends: 47029 [2021-11-12 23:44:49,990 INFO L226 Difference]: Without dead ends: 47028 [2021-11-12 23:44:50,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1521 GetRequests, 1230 SyntacticMatches, 95 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29063 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=18543, Invalid=20463, Unknown=0, NotChecked=0, Total=39006 [2021-11-12 23:44:50,027 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 4405 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 951 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 825.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4405 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.84ms SdHoareTripleChecker+Time, 951 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1096.13ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:50,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4405 Valid, 1151 Invalid, 1918 Unknown, 0 Unchecked, 20.84ms Time], IncrementalHoareTripleChecker [951 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 1096.13ms Time] [2021-11-12 23:44:50,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47028 states. [2021-11-12 23:44:50,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47028 to 1433. [2021-11-12 23:44:50,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1431 states have (on average 1.1341719077568133) internal successors, (1623), 1432 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:44:50,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1623 transitions. [2021-11-12 23:44:50,347 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1623 transitions. Word has length 476 [2021-11-12 23:44:50,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:50,348 INFO L470 AbstractCegarLoop]: Abstraction has 1433 states and 1623 transitions. [2021-11-12 23:44:50,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 191 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:44:50,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1623 transitions. [2021-11-12 23:44:50,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2021-11-12 23:44:50,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:50,354 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:50,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:50,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:44:50,580 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:44:50,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:50,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1465147469, now seen corresponding path program 6 times [2021-11-12 23:44:50,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:44:50,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924186592] [2021-11-12 23:44:50,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:50,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:44:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:44:54,054 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:44:54,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924186592] [2021-11-12 23:44:54,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924186592] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:44:54,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289662883] [2021-11-12 23:44:54,054 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:44:54,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:44:54,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:44:54,060 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:44:54,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-12 23:44:54,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 23:44:54,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:44:54,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-12 23:44:54,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:44:55,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:45:04,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289662883] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:45:04,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [459638254] [2021-11-12 23:45:04,954 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-12 23:45:04,954 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:45:04,954 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:45:04,955 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:45:04,955 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:45:04,964 INFO L180 QuantifierPusher]: treesize reduction 15, result has 67.4 percent of original size [2021-11-12 23:45:04,965 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-12 23:45:04,969 INFO L180 QuantifierPusher]: treesize reduction 11, result has 71.1 percent of original size [2021-11-12 23:45:04,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:45:04,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:04,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:04,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:04,990 INFO L180 QuantifierPusher]: treesize reduction 18, result has 76.9 percent of original size [2021-11-12 23:45:04,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-12 23:45:04,993 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.1 percent of original size [2021-11-12 23:45:04,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:45:04,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,005 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:45:05,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:45:05,009 INFO L180 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-11-12 23:45:05,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 23:45:05,014 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:45:05,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:45:05,024 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.3 percent of original size [2021-11-12 23:45:05,025 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 23:45:05,027 INFO L180 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size [2021-11-12 23:45:05,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:45:05,030 INFO L180 QuantifierPusher]: treesize reduction 13, result has 73.5 percent of original size [2021-11-12 23:45:05,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:45:05,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,043 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:45:05,045 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 23:45:05,047 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.4 percent of original size [2021-11-12 23:45:05,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-12 23:45:05,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,060 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:45:05,061 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:45:05,062 INFO L180 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size [2021-11-12 23:45:05,063 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:45:05,066 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:45:05,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:45:05,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:45:05,102 INFO L180 QuantifierPusher]: treesize reduction 4, result has 95.7 percent of original size [2021-11-12 23:45:05,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-12 23:45:05,105 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:45:12,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:45:12,565 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:45:12,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2021-11-12 23:45:12,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907230238] [2021-11-12 23:45:12,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:45:12,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-12 23:45:12,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:45:12,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-12 23:45:12,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19309, Invalid=21293, Unknown=0, NotChecked=0, Total=40602 [2021-11-12 23:45:12,575 INFO L87 Difference]: Start difference. First operand 1433 states and 1623 transitions. Second operand has 192 states, 191 states have (on average 5.057591623036649) internal successors, (966), 191 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:45:13,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:13,852 INFO L93 Difference]: Finished difference Result 1914 states and 2199 transitions. [2021-11-12 23:45:13,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-12 23:45:13,853 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 5.057591623036649) internal successors, (966), 191 states have internal predecessors, (966), 0 states have call successors, (0), 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 483 [2021-11-12 23:45:13,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:13,859 INFO L225 Difference]: With dead ends: 1914 [2021-11-12 23:45:13,859 INFO L226 Difference]: Without dead ends: 1913 [2021-11-12 23:45:13,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1543 GetRequests, 1247 SyntacticMatches, 96 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31620 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=19309, Invalid=21293, Unknown=0, NotChecked=0, Total=40602 [2021-11-12 23:45:13,865 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 285.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.79ms SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 363.52ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:13,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 585 Invalid, 500 Unknown, 0 Unchecked, 2.79ms Time], IncrementalHoareTripleChecker [104 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 363.52ms Time] [2021-11-12 23:45:13,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2021-11-12 23:45:13,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1913. [2021-11-12 23:45:13,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1911 states have (on average 1.1004709576138147) internal successors, (2103), 1912 states have internal predecessors, (2103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:45:13,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2103 transitions. [2021-11-12 23:45:13,926 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2103 transitions. Word has length 483 [2021-11-12 23:45:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:13,928 INFO L470 AbstractCegarLoop]: Abstraction has 1913 states and 2103 transitions. [2021-11-12 23:45:13,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 5.057591623036649) internal successors, (966), 191 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:45:13,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2103 transitions. [2021-11-12 23:45:13,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2021-11-12 23:45:13,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:13,943 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 190, 190, 1, 1, 1] [2021-11-12 23:45:13,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:14,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable265 [2021-11-12 23:45:14,168 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:45:14,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:14,168 INFO L85 PathProgramCache]: Analyzing trace with hash 570905396, now seen corresponding path program 7 times [2021-11-12 23:45:14,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:45:14,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696321333] [2021-11-12 23:45:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:14,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:45:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:45:26,443 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:45:26,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696321333] [2021-11-12 23:45:26,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696321333] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:45:26,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074913837] [2021-11-12 23:45:26,444 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 23:45:26,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:45:26,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:45:26,452 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:45:26,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-12 23:45:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:26,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-12 23:45:26,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:45:28,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:46:03,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074913837] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:46:03,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [272107265] [2021-11-12 23:46:03,967 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 23:46:03,967 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:46:03,967 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:46:03,967 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:46:03,967 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:46:03,971 INFO L180 QuantifierPusher]: treesize reduction 15, result has 67.4 percent of original size [2021-11-12 23:46:03,972 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-12 23:46:03,973 INFO L180 QuantifierPusher]: treesize reduction 11, result has 71.1 percent of original size [2021-11-12 23:46:03,974 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:46:03,983 INFO L180 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-11-12 23:46:03,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:46:03,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:03,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:03,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:03,993 INFO L180 QuantifierPusher]: treesize reduction 14, result has 84.3 percent of original size [2021-11-12 23:46:03,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-12 23:46:03,996 INFO L180 QuantifierPusher]: treesize reduction 17, result has 81.1 percent of original size [2021-11-12 23:46:04,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-12 23:46:04,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:04,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:04,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:04,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:04,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:04,016 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-11-12 23:46:04,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:46:04,017 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:46:04,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:46:04,020 INFO L180 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-11-12 23:46:04,021 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:46:04,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:04,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:04,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:04,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:04,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:04,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:04,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:04,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:46:04,046 INFO L180 QuantifierPusher]: treesize reduction 15, result has 87.1 percent of original size [2021-11-12 23:46:04,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-12 23:46:04,048 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:46:33,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:46:33,134 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:46:33,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2021-11-12 23:46:33,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942779951] [2021-11-12 23:46:33,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:46:33,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-12 23:46:33,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:46:33,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-12 23:46:33,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73935, Invalid=77775, Unknown=0, NotChecked=0, Total=151710 [2021-11-12 23:46:33,168 INFO L87 Difference]: Start difference. First operand 1913 states and 2103 transitions. Second operand has 384 states, 383 states have (on average 4.992167101827676) internal successors, (1912), 383 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:54,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:54,813 INFO L93 Difference]: Finished difference Result 186229 states and 186804 transitions. [2021-11-12 23:51:54,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-12 23:51:54,815 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.992167101827676) internal successors, (1912), 383 states have internal predecessors, (1912), 0 states have call successors, (0), 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 956 [2021-11-12 23:51:54,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:55,020 INFO L225 Difference]: With dead ends: 186229 [2021-11-12 23:51:55,021 INFO L226 Difference]: Without dead ends: 186228 [2021-11-12 23:51:55,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3057 GetRequests, 2478 SyntacticMatches, 191 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113447 ImplicationChecksByTransitivity, 73.9s TimeCoverageRelationStatistics Valid=73935, Invalid=77775, Unknown=0, NotChecked=0, Total=151710 [2021-11-12 23:51:55,092 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9989 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 2125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2090.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9989 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 4053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 78.88ms SdHoareTripleChecker+Time, 2125 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2777.18ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:55,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9989 Valid, 2303 Invalid, 4053 Unknown, 0 Unchecked, 78.88ms Time], IncrementalHoareTripleChecker [2125 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 2777.18ms Time] [2021-11-12 23:51:55,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186228 states. [2021-11-12 23:51:56,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186228 to 2873. [2021-11-12 23:51:56,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2871 states have (on average 1.1337513061650992) internal successors, (3255), 2872 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3255 transitions. [2021-11-12 23:51:56,606 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3255 transitions. Word has length 956 [2021-11-12 23:51:56,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:56,608 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3255 transitions. [2021-11-12 23:51:56,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.992167101827676) internal successors, (1912), 383 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:56,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3255 transitions. [2021-11-12 23:51:56,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2021-11-12 23:51:56,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:56,624 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 191, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:56,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:51:56,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:51:56,834 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:51:56,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:56,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1401311667, now seen corresponding path program 7 times [2021-11-12 23:51:56,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:51:56,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836854813] [2021-11-12 23:51:56,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:56,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:51:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 90726 backedges. 1 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:12,251 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:52:12,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836854813] [2021-11-12 23:52:12,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836854813] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:52:12,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745128767] [2021-11-12 23:52:12,251 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 23:52:12,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:52:12,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:52:12,254 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:52:12,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-12 23:52:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:12,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 193 conjunts are in the unsatisfiable core [2021-11-12 23:52:12,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:14,845 INFO L134 CoverageAnalysis]: Checked inductivity of 90726 backedges. 1 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:14,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:00,599 INFO L134 CoverageAnalysis]: Checked inductivity of 90726 backedges. 1 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:53:00,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745128767] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:53:00,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1852414319] [2021-11-12 23:53:00,602 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-12 23:53:00,602 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:53:00,602 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:53:00,603 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:53:00,603 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:53:00,613 INFO L180 QuantifierPusher]: treesize reduction 15, result has 67.4 percent of original size [2021-11-12 23:53:00,617 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-12 23:53:00,620 INFO L180 QuantifierPusher]: treesize reduction 11, result has 71.1 percent of original size [2021-11-12 23:53:00,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:53:00,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,648 INFO L180 QuantifierPusher]: treesize reduction 18, result has 76.9 percent of original size [2021-11-12 23:53:00,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-12 23:53:00,660 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.1 percent of original size [2021-11-12 23:53:00,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 23:53:00,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,673 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:53:00,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:53:00,676 INFO L180 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-11-12 23:53:00,677 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 23:53:00,681 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-11-12 23:53:00,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:53:00,685 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.3 percent of original size [2021-11-12 23:53:00,687 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 23:53:00,688 INFO L180 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size [2021-11-12 23:53:00,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:53:00,691 INFO L180 QuantifierPusher]: treesize reduction 13, result has 73.5 percent of original size [2021-11-12 23:53:00,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:53:00,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,703 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:53:00,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 23:53:00,708 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.4 percent of original size [2021-11-12 23:53:00,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-12 23:53:00,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,720 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:53:00,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:53:00,723 INFO L180 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size [2021-11-12 23:53:00,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:53:00,727 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:53:00,728 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:53:00,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:53:00,771 INFO L180 QuantifierPusher]: treesize reduction 4, result has 95.7 percent of original size [2021-11-12 23:53:00,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-12 23:53:00,774 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:53:31,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:53:31,370 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:53:31,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2021-11-12 23:53:31,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372490799] [2021-11-12 23:53:31,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:53:31,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-12 23:53:31,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:53:31,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-12 23:53:31,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75469, Invalid=79373, Unknown=0, NotChecked=0, Total=154842 [2021-11-12 23:53:31,403 INFO L87 Difference]: Start difference. First operand 2873 states and 3255 transitions. Second operand has 384 states, 383 states have (on average 5.028720626631854) internal successors, (1926), 383 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:53:38,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:53:38,427 INFO L93 Difference]: Finished difference Result 3834 states and 4407 transitions. [2021-11-12 23:53:38,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-12 23:53:38,429 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 5.028720626631854) internal successors, (1926), 383 states have internal predecessors, (1926), 0 states have call successors, (0), 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 963 [2021-11-12 23:53:38,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:53:38,435 INFO L225 Difference]: With dead ends: 3834 [2021-11-12 23:53:38,435 INFO L226 Difference]: Without dead ends: 3833 [2021-11-12 23:53:38,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3079 GetRequests, 2495 SyntacticMatches, 192 SemanticMatches, 392 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118596 ImplicationChecksByTransitivity, 88.3s TimeCoverageRelationStatistics Valid=75469, Invalid=79373, Unknown=0, NotChecked=0, Total=154842 [2021-11-12 23:53:38,448 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 47 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 536.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.46ms SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 693.24ms IncrementalHoareTripleChecker+Time [2021-11-12 23:53:38,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1161 Invalid, 987 Unknown, 0 Unchecked, 6.46ms Time], IncrementalHoareTripleChecker [203 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 693.24ms Time] [2021-11-12 23:53:38,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2021-11-12 23:53:38,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3833. [2021-11-12 23:53:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3831 states have (on average 1.100234925606891) internal successors, (4215), 3832 states have internal predecessors, (4215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:53:38,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 4215 transitions. [2021-11-12 23:53:38,546 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 4215 transitions. Word has length 963 [2021-11-12 23:53:38,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:53:38,548 INFO L470 AbstractCegarLoop]: Abstraction has 3833 states and 4215 transitions. [2021-11-12 23:53:38,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 5.028720626631854) internal successors, (1926), 383 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:53:38,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 4215 transitions. [2021-11-12 23:53:38,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1917 [2021-11-12 23:53:38,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:38,584 INFO L514 BasicCegarLoop]: trace histogram [383, 383, 383, 382, 382, 1, 1, 1] [2021-11-12 23:53:38,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:38,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable307 [2021-11-12 23:53:38,800 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-12 23:53:38,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:38,801 INFO L85 PathProgramCache]: Analyzing trace with hash 773198644, now seen corresponding path program 8 times [2021-11-12 23:53:38,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:53:38,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356166797] [2021-11-12 23:53:38,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:38,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:53:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:27,152 INFO L134 CoverageAnalysis]: Checked inductivity of 365383 backedges. 0 proven. 365383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:27,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:54:27,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356166797] [2021-11-12 23:54:27,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356166797] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:54:27,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275331796] [2021-11-12 23:54:27,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:54:27,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:54:27,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:54:27,154 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:54:27,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6faeb283-faa8-4706-9a3f-5fb5ce33ba3b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-12 23:54:31,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2021-11-12 23:54:31,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:54:31,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 3456 conjuncts, 384 conjunts are in the unsatisfiable core [2021-11-12 23:54:31,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 365383 backedges. 0 proven. 365383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:35,286 INFO L328 TraceCheckSpWp]: Computing backward predicates...