./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8 --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 ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:26:48,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:26:48,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:26:48,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:26:48,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:26:48,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:26:48,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:26:48,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:26:48,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:26:48,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:26:48,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:26:48,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:26:48,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:26:48,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:26:48,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:26:48,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:26:48,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:26:48,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:26:48,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:26:48,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:26:48,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:26:48,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:26:48,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:26:48,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:26:48,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:26:48,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:26:48,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:26:48,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:26:48,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:26:48,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:26:48,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:26:48,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:26:48,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:26:48,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:26:48,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:26:48,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:26:48,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:26:48,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:26:48,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:26:48,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:26:48,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:26:48,788 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-13 07:26:48,817 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:26:48,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:26:48,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:26:48,819 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:26:48,819 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:26:48,819 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:26:48,820 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:26:48,820 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:26:48,820 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:26:48,820 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:26:48,821 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:26:48,821 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:26:48,821 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:26:48,822 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:26:48,822 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:26:48,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:26:48,823 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:26:48,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:26:48,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:26:48,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:26:48,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:26:48,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:26:48,824 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 07:26:48,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:26:48,825 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:26:48,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:26:48,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:26:48,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:26:48,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:26:48,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:26:48,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:26:48,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:26:48,827 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:26:48,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:26:48,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:26:48,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:26:48,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:26:48,828 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_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d [2021-10-13 07:26:49,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:26:49,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:26:49,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:26:49,173 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:26:49,174 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:26:49,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2021-10-13 07:26:49,259 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/data/d0829af1a/6f426b1f6fbb4207b0aa5d184ec81eac/FLAG1ae477d0d [2021-10-13 07:26:49,766 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:26:49,767 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2021-10-13 07:26:49,774 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/data/d0829af1a/6f426b1f6fbb4207b0aa5d184ec81eac/FLAG1ae477d0d [2021-10-13 07:26:50,123 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/data/d0829af1a/6f426b1f6fbb4207b0aa5d184ec81eac [2021-10-13 07:26:50,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:26:50,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:26:50,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:26:50,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:26:50,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:26:50,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:26:50" (1/1) ... [2021-10-13 07:26:50,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65a404cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:50, skipping insertion in model container [2021-10-13 07:26:50,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:26:50" (1/1) ... [2021-10-13 07:26:50,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:26:50,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:26:50,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:26:50,336 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:26:50,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:26:50,364 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:26:50,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:50 WrapperNode [2021-10-13 07:26:50,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:26:50,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:26:50,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:26:50,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:26:50,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:50" (1/1) ... [2021-10-13 07:26:50,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:50" (1/1) ... [2021-10-13 07:26:50,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:26:50,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:26:50,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:26:50,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:26:50,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:50" (1/1) ... [2021-10-13 07:26:50,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:50" (1/1) ... [2021-10-13 07:26:50,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:50" (1/1) ... [2021-10-13 07:26:50,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:50" (1/1) ... [2021-10-13 07:26:50,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:50" (1/1) ... [2021-10-13 07:26:50,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:50" (1/1) ... [2021-10-13 07:26:50,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:50" (1/1) ... [2021-10-13 07:26:50,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:26:50,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:26:50,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:26:50,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:26:50,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:50" (1/1) ... [2021-10-13 07:26:50,446 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:26:50,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:26:50,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:26:50,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:26:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:26:50,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:26:50,851 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:26:50,852 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:26:50,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:26:50 BoogieIcfgContainer [2021-10-13 07:26:50,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:26:50,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:26:50,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:26:50,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:26:50,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:26:50" (1/3) ... [2021-10-13 07:26:50,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2243c042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:26:50, skipping insertion in model container [2021-10-13 07:26:50,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:50" (2/3) ... [2021-10-13 07:26:50,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2243c042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:26:50, skipping insertion in model container [2021-10-13 07:26:50,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:26:50" (3/3) ... [2021-10-13 07:26:50,886 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2021-10-13 07:26:50,892 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:26:50,893 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-13 07:26:50,967 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:26:50,976 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, mConcurrency=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 [2021-10-13 07:26:50,979 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-13 07:26:50,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:51,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:26:51,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:51,006 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:26:51,007 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:26:51,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:51,014 INFO L82 PathProgramCache]: Analyzing trace with hash 29686457, now seen corresponding path program 1 times [2021-10-13 07:26:51,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:26:51,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250615961] [2021-10-13 07:26:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:51,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:26:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:51,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:26:51,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250615961] [2021-10-13 07:26:51,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250615961] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:51,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:51,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:26:51,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134491030] [2021-10-13 07:26:51,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:26:51,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:26:51,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:26:51,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:51,235 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:51,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:51,292 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2021-10-13 07:26:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:26:51,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 07:26:51,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:51,305 INFO L225 Difference]: With dead ends: 66 [2021-10-13 07:26:51,306 INFO L226 Difference]: Without dead ends: 40 [2021-10-13 07:26:51,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:51,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-13 07:26:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 25. [2021-10-13 07:26:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-10-13 07:26:51,350 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 5 [2021-10-13 07:26:51,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:51,351 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-10-13 07:26:51,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:51,352 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-10-13 07:26:51,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:26:51,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:51,353 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:26:51,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:26:51,354 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:26:51,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:51,355 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2021-10-13 07:26:51,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:26:51,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500576472] [2021-10-13 07:26:51,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:51,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:26:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:51,399 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:26:51,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500576472] [2021-10-13 07:26:51,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500576472] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:51,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:51,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:26:51,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189728427] [2021-10-13 07:26:51,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:26:51,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:26:51,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:26:51,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:51,404 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:51,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:51,434 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2021-10-13 07:26:51,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:26:51,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 07:26:51,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:51,437 INFO L225 Difference]: With dead ends: 34 [2021-10-13 07:26:51,437 INFO L226 Difference]: Without dead ends: 33 [2021-10-13 07:26:51,438 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:51,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-13 07:26:51,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2021-10-13 07:26:51,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.631578947368421) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-10-13 07:26:51,445 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 5 [2021-10-13 07:26:51,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:51,446 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-13 07:26:51,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-10-13 07:26:51,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:26:51,447 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:51,447 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:26:51,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:26:51,448 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:26:51,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:51,449 INFO L82 PathProgramCache]: Analyzing trace with hash 920280251, now seen corresponding path program 1 times [2021-10-13 07:26:51,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:26:51,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311336643] [2021-10-13 07:26:51,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:51,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:26:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:51,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:51,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:26:51,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311336643] [2021-10-13 07:26:51,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311336643] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:51,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:51,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:26:51,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348399063] [2021-10-13 07:26:51,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:26:51,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:26:51,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:26:51,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:51,501 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:51,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:51,534 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-10-13 07:26:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:26:51,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:26:51,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:51,537 INFO L225 Difference]: With dead ends: 45 [2021-10-13 07:26:51,537 INFO L226 Difference]: Without dead ends: 44 [2021-10-13 07:26:51,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:51,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-13 07:26:51,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2021-10-13 07:26:51,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.608695652173913) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:51,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2021-10-13 07:26:51,546 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 6 [2021-10-13 07:26:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:51,546 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-10-13 07:26:51,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:51,547 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2021-10-13 07:26:51,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:26:51,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:51,548 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:26:51,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:26:51,549 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:26:51,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:51,550 INFO L82 PathProgramCache]: Analyzing trace with hash 920236110, now seen corresponding path program 1 times [2021-10-13 07:26:51,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:26:51,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207399347] [2021-10-13 07:26:51,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:51,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:26:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:51,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:26:51,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207399347] [2021-10-13 07:26:51,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207399347] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:51,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:51,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:26:51,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069580646] [2021-10-13 07:26:51,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:26:51,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:26:51,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:26:51,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:51,618 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:51,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:51,636 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-10-13 07:26:51,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:26:51,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:26:51,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:51,638 INFO L225 Difference]: With dead ends: 31 [2021-10-13 07:26:51,638 INFO L226 Difference]: Without dead ends: 30 [2021-10-13 07:26:51,639 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:51,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-13 07:26:51,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-13 07:26:51,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.565217391304348) internal successors, (36), 29 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) [2021-10-13 07:26:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-10-13 07:26:51,674 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 6 [2021-10-13 07:26:51,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:51,675 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-10-13 07:26:51,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:51,675 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-10-13 07:26:51,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:26:51,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:51,676 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:51,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:26:51,677 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:26:51,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:51,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1537451600, now seen corresponding path program 1 times [2021-10-13 07:26:51,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:26:51,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813966616] [2021-10-13 07:26:51,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:51,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:26:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:51,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:26:51,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813966616] [2021-10-13 07:26:51,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813966616] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:51,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:51,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:26:51,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115305156] [2021-10-13 07:26:51,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:26:51,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:26:51,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:26:51,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:51,743 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:51,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:51,773 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2021-10-13 07:26:51,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:26:51,774 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 [2021-10-13 07:26:51,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:51,776 INFO L225 Difference]: With dead ends: 30 [2021-10-13 07:26:51,777 INFO L226 Difference]: Without dead ends: 29 [2021-10-13 07:26:51,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:51,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-13 07:26:51,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-13 07:26:51,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:51,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-10-13 07:26:51,792 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 7 [2021-10-13 07:26:51,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:51,793 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-10-13 07:26:51,794 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) [2021-10-13 07:26:51,794 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-10-13 07:26:51,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:26:51,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:51,796 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:51,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:26:51,797 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:26:51,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:51,799 INFO L82 PathProgramCache]: Analyzing trace with hash -416359280, now seen corresponding path program 1 times [2021-10-13 07:26:51,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:26:51,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702517028] [2021-10-13 07:26:51,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:51,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:26:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:51,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:26:51,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702517028] [2021-10-13 07:26:51,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702517028] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:51,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:51,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:26:51,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887280973] [2021-10-13 07:26:51,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:26:51,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:26:51,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:26:51,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:51,878 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:51,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:51,893 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2021-10-13 07:26:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:26:51,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 07:26:51,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:51,896 INFO L225 Difference]: With dead ends: 29 [2021-10-13 07:26:51,896 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 07:26:51,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:51,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 07:26:51,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-13 07:26:51,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:51,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-10-13 07:26:51,905 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 8 [2021-10-13 07:26:51,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:51,905 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-10-13 07:26:51,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:51,906 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-10-13 07:26:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:26:51,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:51,907 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-13 07:26:51,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:26:51,908 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:26:51,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:51,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1292751585, now seen corresponding path program 1 times [2021-10-13 07:26:51,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:26:51,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114922069] [2021-10-13 07:26:51,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:51,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:26:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:51,968 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:26:51,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114922069] [2021-10-13 07:26:51,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114922069] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:26:51,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251689479] [2021-10-13 07:26:51,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:51,969 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:26:51,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:26:51,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:26:51,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:26:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:52,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:26:52,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:52,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:52,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251689479] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:26:52,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1164106226] [2021-10-13 07:26:52,298 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-13 07:26:52,298 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:26:52,305 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:26:52,316 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:26:52,316 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:26:52,388 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:52,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:26:52,433 INFO L180 QuantifierPusher]: treesize reduction 15, result has 75.8 percent of original size [2021-10-13 07:26:52,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 07:26:52,467 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:52,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:26:52,493 INFO L180 QuantifierPusher]: treesize reduction 9, result has 83.3 percent of original size [2021-10-13 07:26:52,497 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-10-13 07:26:52,500 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.5 percent of original size [2021-10-13 07:26:52,504 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-10-13 07:26:52,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,660 INFO L180 QuantifierPusher]: treesize reduction 13, result has 88.0 percent of original size [2021-10-13 07:26:52,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-13 07:26:52,679 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:52,723 INFO L185 QuantifierPusher]: treesize reduction 6, result has 93.1 percent of original size 81 [2021-10-13 07:26:52,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,779 INFO L180 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-10-13 07:26:52,782 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:26:52,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:52,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:26:52,794 INFO L180 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-10-13 07:26:52,797 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:26:52,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:52,893 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:52,908 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:26:52,918 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:52,929 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:26:52,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:52,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-13 07:26:52,966 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:26:52,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:52,986 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-13 07:26:53,013 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-10-13 07:26:53,023 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-13 07:26:53,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:53,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:53,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:53,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:53,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:53,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:53,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:53,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:53,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:53,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:53,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:53,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:53,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:53,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:53,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:53,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:53,150 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:26:53,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:26:53,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:26:53,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-10-13 07:26:53,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787584850] [2021-10-13 07:26:53,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:26:53,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:26:53,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:26:53,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:26:53,693 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:53,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:53,792 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2021-10-13 07:26:53,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:26:53,793 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 07:26:53,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:53,803 INFO L225 Difference]: With dead ends: 81 [2021-10-13 07:26:53,806 INFO L226 Difference]: Without dead ends: 80 [2021-10-13 07:26:53,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 582.8ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:26:53,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-13 07:26:53,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 40. [2021-10-13 07:26:53,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.4) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:53,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2021-10-13 07:26:53,830 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 9 [2021-10-13 07:26:53,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:53,831 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2021-10-13 07:26:53,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:53,832 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2021-10-13 07:26:53,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:26:53,832 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:53,832 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:53,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:54,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-13 07:26:54,058 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)] === [2021-10-13 07:26:54,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:54,058 INFO L82 PathProgramCache]: Analyzing trace with hash -689307342, now seen corresponding path program 1 times [2021-10-13 07:26:54,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:26:54,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865258751] [2021-10-13 07:26:54,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:54,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:26:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:54,092 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:26:54,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865258751] [2021-10-13 07:26:54,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865258751] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:54,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:54,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:26:54,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980558746] [2021-10-13 07:26:54,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:54,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:26:54,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:54,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:54,095 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:54,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:54,164 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2021-10-13 07:26:54,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:26:54,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 07:26:54,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:54,171 INFO L225 Difference]: With dead ends: 72 [2021-10-13 07:26:54,172 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 07:26:54,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:26:54,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 07:26:54,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 50. [2021-10-13 07:26:54,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 49 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:54,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2021-10-13 07:26:54,194 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 10 [2021-10-13 07:26:54,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:54,195 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2021-10-13 07:26:54,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:54,195 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2021-10-13 07:26:54,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:26:54,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:54,197 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:54,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-13 07:26:54,197 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:26:54,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:54,201 INFO L82 PathProgramCache]: Analyzing trace with hash 106308951, now seen corresponding path program 1 times [2021-10-13 07:26:54,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:26:54,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557557060] [2021-10-13 07:26:54,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:54,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:26:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:54,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:26:54,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557557060] [2021-10-13 07:26:54,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557557060] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:54,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:54,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:26:54,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851893438] [2021-10-13 07:26:54,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:54,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:26:54,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:54,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:54,263 INFO L87 Difference]: Start difference. First operand 50 states and 62 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) [2021-10-13 07:26:54,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:54,319 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2021-10-13 07:26:54,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:26:54,320 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 [2021-10-13 07:26:54,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:54,320 INFO L225 Difference]: With dead ends: 54 [2021-10-13 07:26:54,321 INFO L226 Difference]: Without dead ends: 52 [2021-10-13 07:26:54,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:26:54,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-13 07:26:54,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2021-10-13 07:26:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.325) internal successors, (53), 42 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:54,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2021-10-13 07:26:54,328 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 11 [2021-10-13 07:26:54,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:54,328 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2021-10-13 07:26:54,328 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) [2021-10-13 07:26:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2021-10-13 07:26:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:26:54,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:54,330 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:54,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-13 07:26:54,330 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:26:54,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:54,331 INFO L82 PathProgramCache]: Analyzing trace with hash -999444228, now seen corresponding path program 1 times [2021-10-13 07:26:54,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:26:54,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348327646] [2021-10-13 07:26:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:54,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:26:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:54,395 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:26:54,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348327646] [2021-10-13 07:26:54,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348327646] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:26:54,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671481627] [2021-10-13 07:26:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:54,396 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:26:54,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:26:54,397 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:26:54,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:26:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:54,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:26:54,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:54,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:54,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:54,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:54,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671481627] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:26:54,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1000353037] [2021-10-13 07:26:54,607 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-13 07:26:54,609 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:26:54,611 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:26:54,612 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:26:54,612 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:26:54,629 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:54,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:26:54,664 INFO L180 QuantifierPusher]: treesize reduction 15, result has 75.8 percent of original size [2021-10-13 07:26:54,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 07:26:54,673 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:54,676 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:26:54,682 INFO L180 QuantifierPusher]: treesize reduction 8, result has 85.7 percent of original size [2021-10-13 07:26:54,691 INFO L185 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size 31 [2021-10-13 07:26:54,701 INFO L180 QuantifierPusher]: treesize reduction 12, result has 76.9 percent of original size [2021-10-13 07:26:54,705 INFO L185 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size 33 [2021-10-13 07:26:54,708 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.4 percent of original size [2021-10-13 07:26:54,713 INFO L185 QuantifierPusher]: treesize reduction 6, result has 82.4 percent of original size 28 [2021-10-13 07:26:54,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,755 INFO L180 QuantifierPusher]: treesize reduction 21, result has 82.1 percent of original size [2021-10-13 07:26:54,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-13 07:26:54,775 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.1 percent of original size [2021-10-13 07:26:54,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-13 07:26:54,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,836 INFO L180 QuantifierPusher]: treesize reduction 6, result has 85.4 percent of original size [2021-10-13 07:26:54,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-13 07:26:54,842 INFO L180 QuantifierPusher]: treesize reduction 5, result has 90.2 percent of original size [2021-10-13 07:26:54,847 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-13 07:26:54,851 INFO L180 QuantifierPusher]: treesize reduction 6, result has 85.4 percent of original size [2021-10-13 07:26:54,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-13 07:26:54,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:54,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:54,967 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:26:54,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:54,977 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:26:54,979 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:54,987 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-10-13 07:26:54,993 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:26:54,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:55,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-10-13 07:26:55,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-10-13 07:26:55,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-10-13 07:26:55,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:55,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:55,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:55,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:55,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:55,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:55,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:55,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:55,064 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:26:55,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1000353037] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:55,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:26:55,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3, 3, 3] total 11 [2021-10-13 07:26:55,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895534621] [2021-10-13 07:26:55,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:26:55,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:26:55,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:26:55,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:26:55,590 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) [2021-10-13 07:26:56,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:56,079 INFO L93 Difference]: Finished difference Result 85 states and 102 transitions. [2021-10-13 07:26:56,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:26:56,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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 12 [2021-10-13 07:26:56,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:56,081 INFO L225 Difference]: With dead ends: 85 [2021-10-13 07:26:56,081 INFO L226 Difference]: Without dead ends: 67 [2021-10-13 07:26:56,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 821.7ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:26:56,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-13 07:26:56,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 47. [2021-10-13 07:26:56,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 46 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2021-10-13 07:26:56,089 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 12 [2021-10-13 07:26:56,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:56,090 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2021-10-13 07:26:56,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) [2021-10-13 07:26:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2021-10-13 07:26:56,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:26:56,091 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:56,091 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:56,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:56,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:26:56,292 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:26:56,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:56,293 INFO L82 PathProgramCache]: Analyzing trace with hash 866779658, now seen corresponding path program 1 times [2021-10-13 07:26:56,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:26:56,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798665856] [2021-10-13 07:26:56,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:56,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:26:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:56,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:26:56,322 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:26:56,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798665856] [2021-10-13 07:26:56,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798665856] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:56,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:56,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:26:56,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298260356] [2021-10-13 07:26:56,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:56,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:26:56,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:56,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:56,325 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:56,351 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2021-10-13 07:26:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:26:56,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 07:26:56,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:56,353 INFO L225 Difference]: With dead ends: 47 [2021-10-13 07:26:56,353 INFO L226 Difference]: Without dead ends: 46 [2021-10-13 07:26:56,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:26:56,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-13 07:26:56,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-10-13 07:26:56,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.255813953488372) internal successors, (54), 44 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2021-10-13 07:26:56,381 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 14 [2021-10-13 07:26:56,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:56,383 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2021-10-13 07:26:56,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:56,383 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2021-10-13 07:26:56,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:26:56,385 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:56,386 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:56,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-10-13 07:26:56,386 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:26:56,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:56,387 INFO L82 PathProgramCache]: Analyzing trace with hash -248454813, now seen corresponding path program 1 times [2021-10-13 07:26:56,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:26:56,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000238053] [2021-10-13 07:26:56,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:56,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:26:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:56,437 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:26:56,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000238053] [2021-10-13 07:26:56,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000238053] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:26:56,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708219055] [2021-10-13 07:26:56,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:56,438 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:26:56,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:26:56,439 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:26:56,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 07:26:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:56,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:26:56,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:56,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:56,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708219055] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:26:56,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [336119551] [2021-10-13 07:26:56,630 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-10-13 07:26:56,630 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:26:56,631 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:26:56,631 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:26:56,631 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:26:56,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:56,677 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:26:56,680 INFO L180 QuantifierPusher]: treesize reduction 15, result has 75.8 percent of original size [2021-10-13 07:26:56,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 07:26:56,685 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:56,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:26:56,693 INFO L180 QuantifierPusher]: treesize reduction 9, result has 83.3 percent of original size [2021-10-13 07:26:56,695 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-10-13 07:26:56,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:56,721 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:26:56,723 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:56,729 INFO L185 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-10-13 07:26:56,733 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size 65 [2021-10-13 07:26:56,739 INFO L180 QuantifierPusher]: treesize reduction 9, result has 89.5 percent of original size [2021-10-13 07:26:56,745 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-10-13 07:26:56,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,767 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:56,770 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:26:56,773 INFO L180 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-10-13 07:26:56,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-13 07:26:56,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:56,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:26:56,786 INFO L180 QuantifierPusher]: treesize reduction 8, result has 85.7 percent of original size [2021-10-13 07:26:56,790 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 07:26:56,794 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.4 percent of original size [2021-10-13 07:26:56,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-13 07:26:56,805 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:56,815 INFO L185 QuantifierPusher]: treesize reduction 6, result has 89.1 percent of original size 49 [2021-10-13 07:26:56,818 INFO L180 QuantifierPusher]: treesize reduction 6, result has 90.3 percent of original size [2021-10-13 07:26:56,822 INFO L185 QuantifierPusher]: treesize reduction 6, result has 88.0 percent of original size 44 [2021-10-13 07:26:56,826 INFO L180 QuantifierPusher]: treesize reduction 7, result has 89.7 percent of original size [2021-10-13 07:26:56,830 INFO L185 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size 46 [2021-10-13 07:26:56,834 INFO L180 QuantifierPusher]: treesize reduction 6, result has 90.3 percent of original size [2021-10-13 07:26:56,837 INFO L185 QuantifierPusher]: treesize reduction 6, result has 88.0 percent of original size 44 [2021-10-13 07:26:56,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,871 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-10-13 07:26:56,897 INFO L185 QuantifierPusher]: treesize reduction 9, result has 95.2 percent of original size 177 [2021-10-13 07:26:56,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,928 INFO L180 QuantifierPusher]: treesize reduction 9, result has 82.7 percent of original size [2021-10-13 07:26:56,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:26:56,933 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:56,936 INFO L185 QuantifierPusher]: treesize reduction 9, result has 82.0 percent of original size 41 [2021-10-13 07:26:56,941 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.2 percent of original size [2021-10-13 07:26:56,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-13 07:26:56,946 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:56,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-13 07:26:56,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,974 INFO L180 QuantifierPusher]: treesize reduction 9, result has 91.7 percent of original size [2021-10-13 07:26:56,982 INFO L185 QuantifierPusher]: treesize reduction 4, result has 95.5 percent of original size 85 [2021-10-13 07:26:56,987 INFO L180 QuantifierPusher]: treesize reduction 13, result has 87.9 percent of original size [2021-10-13 07:26:56,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-13 07:26:56,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,016 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:57,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:26:57,021 INFO L180 QuantifierPusher]: treesize reduction 9, result has 83.6 percent of original size [2021-10-13 07:26:57,026 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:26:57,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:57,030 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:26:57,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,054 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:57,063 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:26:57,065 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:57,069 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:26:57,071 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:57,074 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-13 07:26:57,079 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:26:57,081 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:57,084 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-13 07:26:57,086 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-10-13 07:26:57,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-10-13 07:26:57,096 INFO L180 QuantifierPusher]: treesize reduction 9, result has 82.7 percent of original size [2021-10-13 07:26:57,098 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:26:57,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:57,103 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-13 07:26:57,104 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:57,106 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:26:57,109 INFO L180 QuantifierPusher]: treesize reduction 9, result has 86.6 percent of original size [2021-10-13 07:26:57,113 INFO L185 QuantifierPusher]: treesize reduction 8, result has 85.2 percent of original size 46 [2021-10-13 07:26:57,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,162 INFO L180 QuantifierPusher]: treesize reduction 8, result has 93.1 percent of original size [2021-10-13 07:26:57,171 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size 94 [2021-10-13 07:26:57,179 INFO L180 QuantifierPusher]: treesize reduction 12, result has 89.6 percent of original size [2021-10-13 07:26:57,183 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-13 07:26:57,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,208 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:57,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:26:57,212 INFO L180 QuantifierPusher]: treesize reduction 9, result has 83.6 percent of original size [2021-10-13 07:26:57,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:26:57,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:57,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-13 07:26:57,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:57,316 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:26:57,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:26:57,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:26:57,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2021-10-13 07:26:57,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616620844] [2021-10-13 07:26:57,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:26:57,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:26:57,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:26:57,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:26:57,841 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:57,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:57,903 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2021-10-13 07:26:57,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:26:57,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 07:26:57,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:57,905 INFO L225 Difference]: With dead ends: 72 [2021-10-13 07:26:57,905 INFO L226 Difference]: Without dead ends: 56 [2021-10-13 07:26:57,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 566.1ms TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-10-13 07:26:57,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-13 07:26:57,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2021-10-13 07:26:57,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 48 states have (on average 1.1875) 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) [2021-10-13 07:26:57,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-10-13 07:26:57,918 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 16 [2021-10-13 07:26:57,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:57,919 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-10-13 07:26:57,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:57,919 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-10-13 07:26:57,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:26:57,924 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:57,925 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:57,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:58,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:26:58,150 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:26:58,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:58,150 INFO L82 PathProgramCache]: Analyzing trace with hash -764389965, now seen corresponding path program 2 times [2021-10-13 07:26:58,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:26:58,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846928395] [2021-10-13 07:26:58,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:58,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:26:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:26:58,178 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:26:58,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846928395] [2021-10-13 07:26:58,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846928395] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:26:58,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527464602] [2021-10-13 07:26:58,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:26:58,179 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:26:58,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:26:58,180 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:26:58,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 07:26:58,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 07:26:58,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:26:58,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:26:58,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:26:58,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:58,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:26:58,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527464602] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:26:58,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1370734940] [2021-10-13 07:26:58,387 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-10-13 07:26:58,388 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:26:58,388 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:26:58,388 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:26:58,389 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:26:58,401 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:26:58,408 INFO L180 QuantifierPusher]: treesize reduction 15, result has 75.8 percent of original size [2021-10-13 07:26:58,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 07:26:58,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:26:58,418 INFO L180 QuantifierPusher]: treesize reduction 9, result has 83.3 percent of original size [2021-10-13 07:26:58,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-13 07:26:58,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,461 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,473 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:26:58,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,479 INFO L185 QuantifierPusher]: treesize reduction 3, result has 94.1 percent of original size 48 [2021-10-13 07:26:58,482 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.7 percent of original size 67 [2021-10-13 07:26:58,486 INFO L180 QuantifierPusher]: treesize reduction 9, result has 89.8 percent of original size [2021-10-13 07:26:58,490 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-10-13 07:26:58,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,517 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:26:58,525 INFO L180 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-10-13 07:26:58,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-13 07:26:58,531 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:26:58,542 INFO L180 QuantifierPusher]: treesize reduction 8, result has 85.7 percent of original size [2021-10-13 07:26:58,545 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 07:26:58,549 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.4 percent of original size [2021-10-13 07:26:58,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-13 07:26:58,554 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,558 INFO L185 QuantifierPusher]: treesize reduction 6, result has 89.1 percent of original size 49 [2021-10-13 07:26:58,563 INFO L180 QuantifierPusher]: treesize reduction 6, result has 90.3 percent of original size [2021-10-13 07:26:58,565 INFO L185 QuantifierPusher]: treesize reduction 6, result has 88.0 percent of original size 44 [2021-10-13 07:26:58,569 INFO L180 QuantifierPusher]: treesize reduction 7, result has 89.7 percent of original size [2021-10-13 07:26:58,572 INFO L185 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size 46 [2021-10-13 07:26:58,578 INFO L180 QuantifierPusher]: treesize reduction 6, result has 90.3 percent of original size [2021-10-13 07:26:58,582 INFO L185 QuantifierPusher]: treesize reduction 6, result has 88.0 percent of original size 44 [2021-10-13 07:26:58,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,625 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-10-13 07:26:58,648 INFO L185 QuantifierPusher]: treesize reduction 9, result has 95.2 percent of original size 177 [2021-10-13 07:26:58,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,682 INFO L180 QuantifierPusher]: treesize reduction 9, result has 82.7 percent of original size [2021-10-13 07:26:58,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:26:58,691 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,694 INFO L185 QuantifierPusher]: treesize reduction 9, result has 82.0 percent of original size 41 [2021-10-13 07:26:58,696 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.2 percent of original size [2021-10-13 07:26:58,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-13 07:26:58,707 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,709 INFO L185 QuantifierPusher]: treesize reduction 9, result has 83.6 percent of original size 46 [2021-10-13 07:26:58,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,740 INFO L180 QuantifierPusher]: treesize reduction 18, result has 85.0 percent of original size [2021-10-13 07:26:58,748 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.7 percent of original size 89 [2021-10-13 07:26:58,756 INFO L180 QuantifierPusher]: treesize reduction 12, result has 89.1 percent of original size [2021-10-13 07:26:58,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-13 07:26:58,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,788 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,790 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:26:58,793 INFO L180 QuantifierPusher]: treesize reduction 9, result has 83.6 percent of original size [2021-10-13 07:26:58,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:26:58,798 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,800 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:26:58,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,843 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,850 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:26:58,853 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,856 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:26:58,857 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-13 07:26:58,864 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-10-13 07:26:58,867 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-10-13 07:26:58,875 INFO L180 QuantifierPusher]: treesize reduction 9, result has 82.7 percent of original size [2021-10-13 07:26:58,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:26:58,881 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-13 07:26:58,885 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:26:58,891 INFO L180 QuantifierPusher]: treesize reduction 9, result has 86.6 percent of original size [2021-10-13 07:26:58,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-13 07:26:58,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,923 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,930 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.2 percent of original size 105 [2021-10-13 07:26:58,936 INFO L180 QuantifierPusher]: treesize reduction 9, result has 92.9 percent of original size [2021-10-13 07:26:58,942 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-10-13 07:26:58,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,968 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:58,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:26:58,975 INFO L180 QuantifierPusher]: treesize reduction 9, result has 83.6 percent of original size [2021-10-13 07:26:58,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:26:58,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:58,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,025 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:59,030 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-13 07:26:59,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:59,074 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:26:59,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:26:59,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:26:59,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2021-10-13 07:26:59,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35539428] [2021-10-13 07:26:59,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:59,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:26:59,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:59,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:26:59,590 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:59,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:59,627 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-10-13 07:26:59,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:26:59,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 07:26:59,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:59,628 INFO L225 Difference]: With dead ends: 59 [2021-10-13 07:26:59,628 INFO L226 Difference]: Without dead ends: 41 [2021-10-13 07:26:59,628 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 530.7ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:26:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-13 07:26:59,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2021-10-13 07:26:59,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-10-13 07:26:59,633 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 16 [2021-10-13 07:26:59,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:59,634 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-13 07:26:59,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-10-13 07:26:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:26:59,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:59,635 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:59,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:59,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2021-10-13 07:26:59,856 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:26:59,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:59,857 INFO L82 PathProgramCache]: Analyzing trace with hash 471236820, now seen corresponding path program 1 times [2021-10-13 07:26:59,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:26:59,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238496994] [2021-10-13 07:26:59,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:59,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:26:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:59,907 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:26:59,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238496994] [2021-10-13 07:26:59,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238496994] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:26:59,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486605613] [2021-10-13 07:26:59,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:59,908 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:26:59,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:26:59,909 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:26:59,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 07:26:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:59,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:26:59,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:27:00,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:27:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:27:00,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486605613] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:27:00,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [863744511] [2021-10-13 07:27:00,185 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-10-13 07:27:00,186 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:27:00,186 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:27:00,186 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:27:00,186 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:27:00,194 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:00,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:27:00,201 INFO L180 QuantifierPusher]: treesize reduction 15, result has 75.8 percent of original size [2021-10-13 07:27:00,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 07:27:00,205 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:00,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:27:00,211 INFO L180 QuantifierPusher]: treesize reduction 8, result has 85.7 percent of original size [2021-10-13 07:27:00,216 INFO L185 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size 31 [2021-10-13 07:27:00,220 INFO L180 QuantifierPusher]: treesize reduction 12, result has 76.9 percent of original size [2021-10-13 07:27:00,222 INFO L185 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size 33 [2021-10-13 07:27:00,226 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.4 percent of original size [2021-10-13 07:27:00,228 INFO L185 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-10-13 07:27:00,231 INFO L180 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size [2021-10-13 07:27:00,233 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-13 07:27:00,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,278 INFO L180 QuantifierPusher]: treesize reduction 15, result has 71.2 percent of original size [2021-10-13 07:27:00,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:27:00,282 INFO L180 QuantifierPusher]: treesize reduction 5, result has 90.6 percent of original size [2021-10-13 07:27:00,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-13 07:27:00,287 INFO L180 QuantifierPusher]: treesize reduction 19, result has 68.9 percent of original size [2021-10-13 07:27:00,289 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-13 07:27:00,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,339 INFO L180 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-10-13 07:27:00,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:27:00,343 INFO L180 QuantifierPusher]: treesize reduction 5, result has 90.6 percent of original size [2021-10-13 07:27:00,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-13 07:27:00,347 INFO L180 QuantifierPusher]: treesize reduction 13, result has 76.4 percent of original size [2021-10-13 07:27:00,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-13 07:27:00,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,374 INFO L180 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-10-13 07:27:00,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:27:00,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:00,440 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:27:01,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:27:01,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:27:01,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2021-10-13 07:27:01,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525621390] [2021-10-13 07:27:01,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:27:01,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:27:01,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:27:01,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-10-13 07:27:01,381 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:01,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:27:01,788 INFO L93 Difference]: Finished difference Result 113 states and 130 transitions. [2021-10-13 07:27:01,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 07:27:01,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-13 07:27:01,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:27:01,790 INFO L225 Difference]: With dead ends: 113 [2021-10-13 07:27:01,790 INFO L226 Difference]: Without dead ends: 112 [2021-10-13 07:27:01,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1224.8ms TimeCoverageRelationStatistics Valid=251, Invalid=871, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 07:27:01,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-13 07:27:01,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 59. [2021-10-13 07:27:01,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 58 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:01,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2021-10-13 07:27:01,800 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 17 [2021-10-13 07:27:01,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:27:01,800 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2021-10-13 07:27:01,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:01,801 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2021-10-13 07:27:01,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:27:01,802 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:27:01,802 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:27:01,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:27:02,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2021-10-13 07:27:02,029 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:27:02,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:27:02,030 INFO L82 PathProgramCache]: Analyzing trace with hash 471235397, now seen corresponding path program 1 times [2021-10-13 07:27:02,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:27:02,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904497943] [2021-10-13 07:27:02,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:27:02,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:27:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:27:02,058 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:27:02,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904497943] [2021-10-13 07:27:02,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904497943] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:27:02,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310553005] [2021-10-13 07:27:02,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:27:02,059 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:27:02,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:27:02,061 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:27:02,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 07:27:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:02,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:27:02,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:27:02,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:27:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:27:02,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310553005] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:27:02,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1788714224] [2021-10-13 07:27:02,277 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-10-13 07:27:02,277 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:27:02,278 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:27:02,278 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:27:02,279 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:27:02,286 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:02,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:27:02,295 INFO L180 QuantifierPusher]: treesize reduction 15, result has 75.8 percent of original size [2021-10-13 07:27:02,297 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 07:27:02,300 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:02,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:27:02,313 INFO L180 QuantifierPusher]: treesize reduction 8, result has 85.7 percent of original size [2021-10-13 07:27:02,316 INFO L185 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size 31 [2021-10-13 07:27:02,320 INFO L180 QuantifierPusher]: treesize reduction 12, result has 76.9 percent of original size [2021-10-13 07:27:02,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:27:02,326 INFO L180 QuantifierPusher]: treesize reduction 8, result has 85.7 percent of original size [2021-10-13 07:27:02,329 INFO L185 QuantifierPusher]: treesize reduction 9, result has 75.7 percent of original size 28 [2021-10-13 07:27:02,331 INFO L180 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size [2021-10-13 07:27:02,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-13 07:27:02,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,385 INFO L180 QuantifierPusher]: treesize reduction 15, result has 71.2 percent of original size [2021-10-13 07:27:02,388 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:27:02,390 INFO L180 QuantifierPusher]: treesize reduction 5, result has 90.6 percent of original size [2021-10-13 07:27:02,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-13 07:27:02,395 INFO L180 QuantifierPusher]: treesize reduction 19, result has 68.9 percent of original size [2021-10-13 07:27:02,396 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-13 07:27:02,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,435 INFO L180 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-10-13 07:27:02,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:27:02,439 INFO L180 QuantifierPusher]: treesize reduction 5, result has 90.6 percent of original size [2021-10-13 07:27:02,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-13 07:27:02,448 INFO L180 QuantifierPusher]: treesize reduction 13, result has 76.4 percent of original size [2021-10-13 07:27:02,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-13 07:27:02,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,475 INFO L180 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-10-13 07:27:02,476 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:27:02,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:02,526 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:27:03,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:27:03,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:27:03,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-10-13 07:27:03,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219753319] [2021-10-13 07:27:03,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:27:03,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:27:03,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:27:03,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:27:03,146 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:03,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:27:03,213 INFO L93 Difference]: Finished difference Result 179 states and 218 transitions. [2021-10-13 07:27:03,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:27:03,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 07:27:03,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:27:03,216 INFO L225 Difference]: With dead ends: 179 [2021-10-13 07:27:03,216 INFO L226 Difference]: Without dead ends: 178 [2021-10-13 07:27:03,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 630.3ms TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:27:03,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-13 07:27:03,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 128. [2021-10-13 07:27:03,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 126 states have (on average 1.2380952380952381) internal successors, (156), 127 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:03,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 156 transitions. [2021-10-13 07:27:03,234 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 156 transitions. Word has length 17 [2021-10-13 07:27:03,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:27:03,235 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 156 transitions. [2021-10-13 07:27:03,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:03,235 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 156 transitions. [2021-10-13 07:27:03,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 07:27:03,237 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:27:03,237 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-13 07:27:03,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:27:03,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:27:03,466 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:27:03,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:27:03,466 INFO L82 PathProgramCache]: Analyzing trace with hash -942594895, now seen corresponding path program 1 times [2021-10-13 07:27:03,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:27:03,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964462780] [2021-10-13 07:27:03,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:27:03,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:27:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:03,533 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:27:03,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:27:03,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964462780] [2021-10-13 07:27:03,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964462780] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:27:03,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244111157] [2021-10-13 07:27:03,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:27:03,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:27:03,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:27:03,536 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:27:03,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 07:27:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:03,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:27:03,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:03,789 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:27:03,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:27:03,976 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:27:03,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244111157] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:27:03,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1268415244] [2021-10-13 07:27:03,979 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-10-13 07:27:03,979 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:27:03,979 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:27:03,979 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:27:03,979 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:27:03,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:03,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:27:03,995 INFO L180 QuantifierPusher]: treesize reduction 15, result has 75.8 percent of original size [2021-10-13 07:27:03,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 07:27:03,999 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:27:04,003 INFO L180 QuantifierPusher]: treesize reduction 9, result has 83.3 percent of original size [2021-10-13 07:27:04,005 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-10-13 07:27:04,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,021 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,024 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:27:04,025 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,028 INFO L185 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-10-13 07:27:04,030 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size 65 [2021-10-13 07:27:04,034 INFO L180 QuantifierPusher]: treesize reduction 9, result has 89.5 percent of original size [2021-10-13 07:27:04,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-10-13 07:27:04,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,052 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:27:04,057 INFO L180 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-10-13 07:27:04,064 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-13 07:27:04,067 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:27:04,071 INFO L180 QuantifierPusher]: treesize reduction 8, result has 85.7 percent of original size [2021-10-13 07:27:04,074 INFO L185 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size 31 [2021-10-13 07:27:04,078 INFO L180 QuantifierPusher]: treesize reduction 12, result has 76.9 percent of original size [2021-10-13 07:27:04,080 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:27:04,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-13 07:27:04,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,088 INFO L185 QuantifierPusher]: treesize reduction 4, result has 92.5 percent of original size 49 [2021-10-13 07:27:04,091 INFO L180 QuantifierPusher]: treesize reduction 13, result has 81.7 percent of original size [2021-10-13 07:27:04,093 INFO L185 QuantifierPusher]: treesize reduction 8, result has 85.2 percent of original size 46 [2021-10-13 07:27:04,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,097 INFO L185 QuantifierPusher]: treesize reduction 4, result has 92.5 percent of original size 49 [2021-10-13 07:27:04,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,121 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.4 percent of original size [2021-10-13 07:27:04,138 INFO L185 QuantifierPusher]: treesize reduction 9, result has 95.2 percent of original size 177 [2021-10-13 07:27:04,147 INFO L180 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size [2021-10-13 07:27:04,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-13 07:27:04,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,187 INFO L180 QuantifierPusher]: treesize reduction 23, result has 66.7 percent of original size [2021-10-13 07:27:04,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-13 07:27:04,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,194 INFO L185 QuantifierPusher]: treesize reduction 9, result has 83.0 percent of original size 44 [2021-10-13 07:27:04,197 INFO L180 QuantifierPusher]: treesize reduction 9, result has 85.0 percent of original size [2021-10-13 07:27:04,199 INFO L185 QuantifierPusher]: treesize reduction 3, result has 93.2 percent of original size 41 [2021-10-13 07:27:04,202 INFO L180 QuantifierPusher]: treesize reduction 4, result has 93.5 percent of original size [2021-10-13 07:27:04,204 INFO L185 QuantifierPusher]: treesize reduction 8, result has 85.2 percent of original size 46 [2021-10-13 07:27:04,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,226 INFO L180 QuantifierPusher]: treesize reduction 17, result has 85.7 percent of original size [2021-10-13 07:27:04,229 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:27:04,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,240 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 70 [2021-10-13 07:27:04,243 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.7 percent of original size 89 [2021-10-13 07:27:04,248 INFO L180 QuantifierPusher]: treesize reduction 12, result has 89.1 percent of original size [2021-10-13 07:27:04,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-13 07:27:04,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,274 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:27:04,276 INFO L180 QuantifierPusher]: treesize reduction 9, result has 83.6 percent of original size [2021-10-13 07:27:04,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:27:04,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:27:04,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,320 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:27:04,323 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,326 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:27:04,328 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,333 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-13 07:27:04,336 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:27:04,337 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-13 07:27:04,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-10-13 07:27:04,346 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-10-13 07:27:04,349 INFO L180 QuantifierPusher]: treesize reduction 30, result has 61.5 percent of original size [2021-10-13 07:27:04,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-10-13 07:27:04,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,380 INFO L180 QuantifierPusher]: treesize reduction 9, result has 82.7 percent of original size [2021-10-13 07:27:04,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:27:04,392 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-13 07:27:04,396 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:27:04,405 INFO L180 QuantifierPusher]: treesize reduction 9, result has 86.6 percent of original size [2021-10-13 07:27:04,407 INFO L185 QuantifierPusher]: treesize reduction 8, result has 85.2 percent of original size 46 [2021-10-13 07:27:04,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,428 INFO L180 QuantifierPusher]: treesize reduction 8, result has 93.1 percent of original size [2021-10-13 07:27:04,432 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size 94 [2021-10-13 07:27:04,437 INFO L180 QuantifierPusher]: treesize reduction 12, result has 89.6 percent of original size [2021-10-13 07:27:04,440 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-13 07:27:04,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:27:04,469 INFO L180 QuantifierPusher]: treesize reduction 9, result has 83.6 percent of original size [2021-10-13 07:27:04,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:27:04,473 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:27:04,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,495 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,500 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:27:04,503 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,505 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:27:04,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-13 07:27:04,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-10-13 07:27:04,516 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-10-13 07:27:04,518 INFO L180 QuantifierPusher]: treesize reduction 16, result has 73.8 percent of original size [2021-10-13 07:27:04,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:27:04,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,543 INFO L180 QuantifierPusher]: treesize reduction 9, result has 82.7 percent of original size [2021-10-13 07:27:04,545 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:27:04,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-13 07:27:04,552 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,555 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:27:04,558 INFO L180 QuantifierPusher]: treesize reduction 9, result has 86.6 percent of original size [2021-10-13 07:27:04,560 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-13 07:27:04,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,586 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.2 percent of original size 105 [2021-10-13 07:27:04,591 INFO L180 QuantifierPusher]: treesize reduction 9, result has 92.9 percent of original size [2021-10-13 07:27:04,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-10-13 07:27:04,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,614 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:27:04,618 INFO L180 QuantifierPusher]: treesize reduction 9, result has 83.6 percent of original size [2021-10-13 07:27:04,620 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:27:04,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:04,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-13 07:27:04,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:04,701 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:27:05,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:27:05,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:27:05,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-10-13 07:27:05,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827922484] [2021-10-13 07:27:05,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 07:27:05,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:27:05,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 07:27:05,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2021-10-13 07:27:05,526 INFO L87 Difference]: Start difference. First operand 128 states and 156 transitions. Second operand has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:06,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:27:06,600 INFO L93 Difference]: Finished difference Result 921 states and 1109 transitions. [2021-10-13 07:27:06,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 07:27:06,601 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 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 [2021-10-13 07:27:06,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:27:06,608 INFO L225 Difference]: With dead ends: 921 [2021-10-13 07:27:06,608 INFO L226 Difference]: Without dead ends: 920 [2021-10-13 07:27:06,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 70 SyntacticMatches, 12 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1312 ImplicationChecksByTransitivity, 1558.7ms TimeCoverageRelationStatistics Valid=907, Invalid=2753, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 07:27:06,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-10-13 07:27:06,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 276. [2021-10-13 07:27:06,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 274 states have (on average 1.2262773722627738) internal successors, (336), 275 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:06,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 336 transitions. [2021-10-13 07:27:06,652 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 336 transitions. Word has length 33 [2021-10-13 07:27:06,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:27:06,652 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 336 transitions. [2021-10-13 07:27:06,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:06,653 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 336 transitions. [2021-10-13 07:27:06,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 07:27:06,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:27:06,654 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:27:06,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:27:06,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable289 [2021-10-13 07:27:06,869 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:27:06,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:27:06,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1117712897, now seen corresponding path program 2 times [2021-10-13 07:27:06,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:27:06,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547576852] [2021-10-13 07:27:06,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:27:06,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:27:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-10-13 07:27:06,918 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:27:06,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547576852] [2021-10-13 07:27:06,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547576852] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:27:06,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56311559] [2021-10-13 07:27:06,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:27:06,919 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:27:06,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:27:06,922 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:27:06,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 07:27:07,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 07:27:07,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:27:07,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:27:07,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-10-13 07:27:07,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:27:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-10-13 07:27:07,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56311559] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:27:07,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [169869902] [2021-10-13 07:27:07,324 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-10-13 07:27:07,325 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:27:07,325 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:27:07,325 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:27:07,326 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:27:07,331 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:07,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:27:07,337 INFO L180 QuantifierPusher]: treesize reduction 15, result has 75.8 percent of original size [2021-10-13 07:27:07,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 07:27:07,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:07,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:27:07,353 INFO L180 QuantifierPusher]: treesize reduction 8, result has 85.7 percent of original size [2021-10-13 07:27:07,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 07:27:07,359 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.4 percent of original size [2021-10-13 07:27:07,360 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-13 07:27:07,363 INFO L180 QuantifierPusher]: treesize reduction 13, result has 78.7 percent of original size [2021-10-13 07:27:07,365 INFO L185 QuantifierPusher]: treesize reduction 9, result has 75.7 percent of original size 28 [2021-10-13 07:27:07,367 INFO L180 QuantifierPusher]: treesize reduction 10, result has 84.6 percent of original size [2021-10-13 07:27:07,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:27:07,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,417 INFO L180 QuantifierPusher]: treesize reduction 15, result has 71.2 percent of original size [2021-10-13 07:27:07,418 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:27:07,420 INFO L180 QuantifierPusher]: treesize reduction 5, result has 90.6 percent of original size [2021-10-13 07:27:07,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-13 07:27:07,424 INFO L180 QuantifierPusher]: treesize reduction 19, result has 68.9 percent of original size [2021-10-13 07:27:07,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-13 07:27:07,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,460 INFO L180 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-10-13 07:27:07,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:27:07,463 INFO L180 QuantifierPusher]: treesize reduction 5, result has 90.6 percent of original size [2021-10-13 07:27:07,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-13 07:27:07,467 INFO L180 QuantifierPusher]: treesize reduction 13, result has 76.4 percent of original size [2021-10-13 07:27:07,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-13 07:27:07,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,505 INFO L180 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-10-13 07:27:07,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:27:07,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:07,548 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:27:08,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:27:08,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:27:08,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2021-10-13 07:27:08,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418275161] [2021-10-13 07:27:08,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:27:08,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:27:08,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:27:08,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:27:08,167 INFO L87 Difference]: Start difference. First operand 276 states and 336 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:08,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:27:08,219 INFO L93 Difference]: Finished difference Result 276 states and 336 transitions. [2021-10-13 07:27:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:27:08,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 38 [2021-10-13 07:27:08,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:27:08,223 INFO L225 Difference]: With dead ends: 276 [2021-10-13 07:27:08,223 INFO L226 Difference]: Without dead ends: 275 [2021-10-13 07:27:08,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 88 SyntacticMatches, 16 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 632.8ms TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:27:08,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-13 07:27:08,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 104. [2021-10-13 07:27:08,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.1650485436893203) internal successors, (120), 103 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:08,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2021-10-13 07:27:08,241 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 38 [2021-10-13 07:27:08,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:27:08,241 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2021-10-13 07:27:08,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:08,242 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2021-10-13 07:27:08,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 07:27:08,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:27:08,243 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-13 07:27:08,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:27:08,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable386 [2021-10-13 07:27:08,461 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:27:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:27:08,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1282357944, now seen corresponding path program 2 times [2021-10-13 07:27:08,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:27:08,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750631909] [2021-10-13 07:27:08,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:27:08,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:27:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:27:08,623 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:27:08,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750631909] [2021-10-13 07:27:08,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750631909] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:27:08,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878402531] [2021-10-13 07:27:08,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:27:08,624 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:27:08,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:27:08,625 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:27:08,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 07:27:08,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 07:27:08,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:27:08,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:27:08,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-10-13 07:27:09,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:27:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-10-13 07:27:09,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878402531] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:27:09,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1863391231] [2021-10-13 07:27:09,237 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-10-13 07:27:09,238 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:27:09,238 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:27:09,238 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:27:09,238 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:27:09,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:27:09,253 INFO L180 QuantifierPusher]: treesize reduction 15, result has 75.8 percent of original size [2021-10-13 07:27:09,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 07:27:09,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:27:09,260 INFO L180 QuantifierPusher]: treesize reduction 9, result has 83.3 percent of original size [2021-10-13 07:27:09,262 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-10-13 07:27:09,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,276 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,279 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:27:09,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,283 INFO L185 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-10-13 07:27:09,285 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size 65 [2021-10-13 07:27:09,288 INFO L180 QuantifierPusher]: treesize reduction 9, result has 89.5 percent of original size [2021-10-13 07:27:09,291 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-10-13 07:27:09,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,318 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:27:09,319 INFO L180 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-10-13 07:27:09,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-13 07:27:09,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,331 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:27:09,332 INFO L180 QuantifierPusher]: treesize reduction 8, result has 85.7 percent of original size [2021-10-13 07:27:09,336 INFO L185 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size 31 [2021-10-13 07:27:09,340 INFO L180 QuantifierPusher]: treesize reduction 12, result has 76.9 percent of original size [2021-10-13 07:27:09,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:27:09,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,346 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-13 07:27:09,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,350 INFO L185 QuantifierPusher]: treesize reduction 4, result has 92.5 percent of original size 49 [2021-10-13 07:27:09,352 INFO L180 QuantifierPusher]: treesize reduction 13, result has 81.7 percent of original size [2021-10-13 07:27:09,355 INFO L185 QuantifierPusher]: treesize reduction 8, result has 85.2 percent of original size 46 [2021-10-13 07:27:09,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,359 INFO L185 QuantifierPusher]: treesize reduction 4, result has 92.5 percent of original size 49 [2021-10-13 07:27:09,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,381 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.4 percent of original size [2021-10-13 07:27:09,397 INFO L185 QuantifierPusher]: treesize reduction 9, result has 95.2 percent of original size 177 [2021-10-13 07:27:09,399 INFO L180 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size [2021-10-13 07:27:09,401 INFO L185 QuantifierPusher]: treesize reduction 5, result has 89.1 percent of original size 41 [2021-10-13 07:27:09,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,435 INFO L180 QuantifierPusher]: treesize reduction 23, result has 66.7 percent of original size [2021-10-13 07:27:09,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-13 07:27:09,439 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-13 07:27:09,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,445 INFO L185 QuantifierPusher]: treesize reduction 3, result has 94.2 percent of original size 49 [2021-10-13 07:27:09,447 INFO L180 QuantifierPusher]: treesize reduction 12, result has 82.9 percent of original size [2021-10-13 07:27:09,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-13 07:27:09,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,473 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:27:09,474 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,478 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.8 percent of original size 68 [2021-10-13 07:27:09,481 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.0 percent of original size 96 [2021-10-13 07:27:09,486 INFO L180 QuantifierPusher]: treesize reduction 12, result has 89.7 percent of original size [2021-10-13 07:27:09,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-13 07:27:09,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:27:09,510 INFO L180 QuantifierPusher]: treesize reduction 9, result has 83.6 percent of original size [2021-10-13 07:27:09,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:27:09,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,516 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:27:09,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,535 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,551 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:27:09,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,556 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:27:09,558 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,560 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:27:09,564 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-13 07:27:09,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 156 [2021-10-13 07:27:09,570 INFO L180 QuantifierPusher]: treesize reduction 30, result has 61.5 percent of original size [2021-10-13 07:27:09,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-10-13 07:27:09,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,598 INFO L180 QuantifierPusher]: treesize reduction 9, result has 82.7 percent of original size [2021-10-13 07:27:09,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:27:09,602 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,604 INFO L185 QuantifierPusher]: treesize reduction 9, result has 82.0 percent of original size 41 [2021-10-13 07:27:09,606 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.2 percent of original size [2021-10-13 07:27:09,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-13 07:27:09,610 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-13 07:27:09,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,638 INFO L180 QuantifierPusher]: treesize reduction 9, result has 91.7 percent of original size [2021-10-13 07:27:09,642 INFO L185 QuantifierPusher]: treesize reduction 4, result has 95.5 percent of original size 85 [2021-10-13 07:27:09,646 INFO L180 QuantifierPusher]: treesize reduction 13, result has 87.9 percent of original size [2021-10-13 07:27:09,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-13 07:27:09,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:27:09,671 INFO L180 QuantifierPusher]: treesize reduction 9, result has 83.6 percent of original size [2021-10-13 07:27:09,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:27:09,674 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,676 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:27:09,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,692 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,697 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:27:09,699 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,705 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:27:09,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-13 07:27:09,712 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:27:09,714 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,716 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-13 07:27:09,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-10-13 07:27:09,721 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-10-13 07:27:09,723 INFO L180 QuantifierPusher]: treesize reduction 16, result has 73.8 percent of original size [2021-10-13 07:27:09,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:27:09,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,765 INFO L180 QuantifierPusher]: treesize reduction 9, result has 82.7 percent of original size [2021-10-13 07:27:09,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:27:09,769 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,771 INFO L185 QuantifierPusher]: treesize reduction 9, result has 82.0 percent of original size 41 [2021-10-13 07:27:09,773 INFO L180 QuantifierPusher]: treesize reduction 9, result has 84.2 percent of original size [2021-10-13 07:27:09,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-13 07:27:09,778 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,781 INFO L185 QuantifierPusher]: treesize reduction 9, result has 83.6 percent of original size 46 [2021-10-13 07:27:09,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,803 INFO L180 QuantifierPusher]: treesize reduction 18, result has 85.0 percent of original size [2021-10-13 07:27:09,808 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.7 percent of original size 89 [2021-10-13 07:27:09,812 INFO L180 QuantifierPusher]: treesize reduction 12, result has 89.1 percent of original size [2021-10-13 07:27:09,815 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-13 07:27:09,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,832 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-13 07:27:09,839 INFO L180 QuantifierPusher]: treesize reduction 9, result has 83.6 percent of original size [2021-10-13 07:27:09,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-13 07:27:09,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,865 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:27:09,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-13 07:27:09,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:09,905 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:27:11,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:27:11,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:27:11,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 3, 3] total 16 [2021-10-13 07:27:11,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974419511] [2021-10-13 07:27:11,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 07:27:11,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:27:11,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 07:27:11,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2021-10-13 07:27:11,095 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand has 17 states, 16 states have (on average 5.25) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:12,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:27:12,002 INFO L93 Difference]: Finished difference Result 453 states and 524 transitions. [2021-10-13 07:27:12,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 07:27:12,004 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.25) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 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 58 [2021-10-13 07:27:12,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:27:12,005 INFO L225 Difference]: With dead ends: 453 [2021-10-13 07:27:12,005 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:27:12,009 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 133 SyntacticMatches, 28 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1490 ImplicationChecksByTransitivity, 1869.8ms TimeCoverageRelationStatistics Valid=968, Invalid=2938, Unknown=0, NotChecked=0, Total=3906 [2021-10-13 07:27:12,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:27:12,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:27:12,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:12,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:27:12,010 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-10-13 07:27:12,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:27:12,010 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:27:12,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.25) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:12,011 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:27:12,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:27:12,014 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:27:12,014 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:27:12,015 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:27:12,015 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:27:12,015 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:27:12,015 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:27:12,016 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:27:12,016 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:27:12,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:27:12,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable425 [2021-10-13 07:27:12,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:27:12,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:12,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:12,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:13,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:15,482 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2021-10-13 07:27:15,482 INFO L853 garLoopResultBuilder]: At program point L23-2(lines 23 34) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~m~0 2147483647)) (.cse1 (<= ULTIMATE.start_main_~N~0 2147483647)) (.cse2 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse3 (<= 0 ULTIMATE.start_main_~N~0))) (or (and .cse0 (<= ULTIMATE.start_main_~m~0 ULTIMATE.start_main_~j~0) .cse1 (<= 0 ULTIMATE.start_main_~i~0) .cse2 .cse3 (<= 0 ULTIMATE.start_main_~j~0)) (and .cse0 (<= ULTIMATE.start_main_~k~0 2147483647) (<= 0 ULTIMATE.start_main_~m~0) .cse1 (<= 0 (+ ULTIMATE.start_main_~k~0 2147483648)) (= ULTIMATE.start_main_~i~0 0) .cse2 .cse3 (<= 0 (+ ULTIMATE.start_main_~j~0 2147483648)) (<= 0 ULTIMATE.start_main_~n~0)))) [2021-10-13 07:27:15,483 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-10-13 07:27:15,483 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-10-13 07:27:15,483 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:27:15,483 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2021-10-13 07:27:15,483 INFO L857 garLoopResultBuilder]: For program point L28-1(line 28) no Hoare annotation was computed. [2021-10-13 07:27:15,483 INFO L857 garLoopResultBuilder]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2021-10-13 07:27:15,483 INFO L853 garLoopResultBuilder]: At program point L28-4(lines 28 30) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~m~0 2147483647) (< ULTIMATE.start_main_~k~0 2147483647) (<= ULTIMATE.start_main_~N~0 2147483647) (<= 0 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~n~0 2147483647) (<= 0 ULTIMATE.start_main_~N~0) (<= 0 ULTIMATE.start_main_~j~0)) [2021-10-13 07:27:15,483 INFO L857 garLoopResultBuilder]: For program point L28-5(lines 28 30) no Hoare annotation was computed. [2021-10-13 07:27:15,484 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-10-13 07:27:15,484 INFO L857 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2021-10-13 07:27:15,484 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:27:15,484 INFO L857 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-10-13 07:27:15,484 INFO L857 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2021-10-13 07:27:15,484 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2021-10-13 07:27:15,484 INFO L853 garLoopResultBuilder]: At program point L25-2(lines 25 32) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~m~0 2147483647)) (.cse1 (<= ULTIMATE.start_main_~N~0 2147483647)) (.cse2 (<= 0 ULTIMATE.start_main_~i~0)) (.cse3 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse4 (<= 0 ULTIMATE.start_main_~N~0)) (.cse5 (<= 0 ULTIMATE.start_main_~j~0))) (or (and .cse0 (<= ULTIMATE.start_main_~j~0 0) .cse1 (<= ULTIMATE.start_main_~i~0 2147483646) .cse2 .cse3 .cse4 .cse5) (and (<= 0 ULTIMATE.start_main_~k~0) (< ULTIMATE.start_main_~i~0 2147483647) .cse0 (< ULTIMATE.start_main_~k~0 2147483647) .cse1 .cse2 .cse3 .cse4 .cse5))) [2021-10-13 07:27:15,484 INFO L857 garLoopResultBuilder]: For program point L25-3(lines 25 32) no Hoare annotation was computed. [2021-10-13 07:27:15,485 INFO L857 garLoopResultBuilder]: For program point L21(lines 21 35) no Hoare annotation was computed. [2021-10-13 07:27:15,485 INFO L860 garLoopResultBuilder]: At program point L21-1(lines 21 35) the Hoare annotation is: true [2021-10-13 07:27:15,485 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2021-10-13 07:27:15,485 INFO L857 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-10-13 07:27:15,488 INFO L857 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-10-13 07:27:15,488 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-10-13 07:27:15,494 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:27:15,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:27:15 BoogieIcfgContainer [2021-10-13 07:27:15,538 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:27:15,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:27:15,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:27:15,539 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:27:15,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:26:50" (3/4) ... [2021-10-13 07:27:15,543 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:27:15,556 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-13 07:27:15,556 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-13 07:27:15,557 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:27:15,610 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:27:15,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:27:15,611 INFO L168 Benchmark]: Toolchain (without parser) took 25482.63 ms. Allocated memory was 100.7 MB in the beginning and 211.8 MB in the end (delta: 111.1 MB). Free memory was 58.8 MB in the beginning and 160.5 MB in the end (delta: -101.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:15,611 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 100.7 MB. Free memory is still 74.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:27:15,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.39 ms. Allocated memory is still 100.7 MB. Free memory was 58.5 MB in the beginning and 75.9 MB in the end (delta: -17.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:15,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.22 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 74.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:27:15,612 INFO L168 Benchmark]: Boogie Preprocessor took 24.48 ms. Allocated memory is still 100.7 MB. Free memory was 74.7 MB in the beginning and 73.8 MB in the end (delta: 935.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:15,612 INFO L168 Benchmark]: RCFGBuilder took 420.10 ms. Allocated memory is still 100.7 MB. Free memory was 73.4 MB in the beginning and 63.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:15,613 INFO L168 Benchmark]: TraceAbstraction took 24660.00 ms. Allocated memory was 100.7 MB in the beginning and 211.8 MB in the end (delta: 111.1 MB). Free memory was 63.4 MB in the beginning and 162.6 MB in the end (delta: -99.2 MB). Peak memory consumption was 116.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:15,614 INFO L168 Benchmark]: Witness Printer took 71.88 ms. Allocated memory is still 211.8 MB. Free memory was 162.6 MB in the beginning and 160.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:15,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 100.7 MB. Free memory is still 74.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 235.39 ms. Allocated memory is still 100.7 MB. Free memory was 58.5 MB in the beginning and 75.9 MB in the end (delta: -17.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.22 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 74.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.48 ms. Allocated memory is still 100.7 MB. Free memory was 74.7 MB in the beginning and 73.8 MB in the end (delta: 935.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 420.10 ms. Allocated memory is still 100.7 MB. Free memory was 73.4 MB in the beginning and 63.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24660.00 ms. Allocated memory was 100.7 MB in the beginning and 211.8 MB in the end (delta: 111.1 MB). Free memory was 63.4 MB in the beginning and 162.6 MB in the end (delta: -99.2 MB). Peak memory consumption was 116.7 MB. Max. memory is 16.1 GB. * Witness Printer took 71.88 ms. Allocated memory is still 211.8 MB. Free memory was 162.6 MB in the beginning and 160.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 24529.0ms, OverallIterations: 18, TraceHistogramMax: 9, EmptinessCheckTime: 33.1ms, AutomataDifference: 3660.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3240.1ms, InitialAbstractionConstructionTime: 14.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 257 SDtfs, 1279 SDslu, 476 SDs, 0 SdLazy, 766 SolverSat, 371 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 979.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 792 GetRequests, 472 SyntacticMatches, 80 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3391 ImplicationChecksByTransitivity, 8472.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred in iteration=16, InterpolantAutomatonStates: 167, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 278.9ms AutomataMinimizationTime, 18 MinimizatonAttempts, 1056 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 129 NumberOfFragments, 138 HoareAnnotationTreeSize, 4 FomulaSimplifications, 3543312 FormulaSimplificationTreeSizeReduction, 1548.8ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 567705 FormulaSimplificationTreeSizeReductionInter, 1678.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 68.1ms SsaConstructionTime, 328.4ms SatisfiabilityAnalysisTime, 2676.2ms InterpolantComputationTime, 504 NumberOfCodeBlocks, 418 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 684 ConstructedInterpolants, 0 QuantifiedInterpolants, 1918 SizeOfPredicates, 19 NumberOfNonLiveVariables, 468 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 36 InterpolantComputations, 9 PerfectInterpolantSequences, 465/836 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 457, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 12, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 37, TOOLS_POST_TIME[ms]: 195, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 37, TOOLS_QUANTIFIERELIM_TIME[ms]: 183, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 62, FLUID_QUERY_TIME[ms]: 2, FLUID_QUERIES: 56, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 6, DOMAIN_JOIN_TIME[ms]: 137, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 79, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 4, DOMAIN_ISBOTTOM_APPLICATIONS: 12, DOMAIN_ISBOTTOM_TIME[ms]: 13, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 154, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 154, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 0, PATH_EXPR_TIME[ms]: 0, REGEX_TO_DAG_TIME[ms]: 1, DAG_COMPRESSION_TIME[ms]: 12, DAG_COMPRESSION_PROCESSED_NODES: 173, DAG_COMPRESSION_RETAINED_NODES: 40, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((((m <= 2147483647 && j <= 0) && N <= 2147483647) && i <= 2147483646) && 0 <= i) && n <= 2147483647) && 0 <= N) && 0 <= j) || ((((((((0 <= k && i < 2147483647) && m <= 2147483647) && k < 2147483647) && N <= 2147483647) && 0 <= i) && n <= 2147483647) && 0 <= N) && 0 <= j) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((m <= 2147483647 && m <= j) && N <= 2147483647) && 0 <= i) && n <= 2147483647) && 0 <= N) && 0 <= j) || (((((((((m <= 2147483647 && k <= 2147483647) && 0 <= m) && N <= 2147483647) && 0 <= k + 2147483648) && i == 0) && n <= 2147483647) && 0 <= N) && 0 <= j + 2147483648) && 0 <= n) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((0 <= k && m <= 2147483647) && k < 2147483647) && N <= 2147483647) && 0 <= i) && n <= 2147483647) && 0 <= N) && 0 <= j - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 07:27:15,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ae8b60-fa1e-4f79-a103-2bd3e01248ff/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...