./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/Binomial.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/Binomial.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs --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 c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:41:30,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:41:30,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:41:30,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:41:30,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:41:30,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:41:30,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:41:30,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:41:30,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:41:30,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:41:30,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:41:30,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:41:30,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:41:30,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:41:30,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:41:30,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:41:30,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:41:30,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:41:30,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:41:30,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:41:30,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:41:30,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:41:30,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:41:30,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:41:30,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:41:30,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:41:30,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:41:30,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:41:30,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:41:30,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:41:30,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:41:30,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:41:30,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:41:30,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:41:30,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:41:30,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:41:30,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:41:30,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:41:30,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:41:30,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:41:30,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:41:30,527 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-19 13:41:30,564 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:41:30,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:41:30,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:41:30,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:41:30,566 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:41:30,567 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:41:30,567 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:41:30,568 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:41:30,568 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:41:30,569 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:41:30,569 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:41:30,569 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:41:30,570 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:41:30,570 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:41:30,570 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:41:30,571 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:41:30,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:41:30,572 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:41:30,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:41:30,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:41:30,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:41:30,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:41:30,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:41:30,573 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-19 13:41:30,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:41:30,574 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:41:30,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:41:30,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:41:30,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:41:30,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:41:30,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:41:30,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:41:30,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:41:30,576 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:41:30,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:41:30,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:41:30,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:41:30,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:41:30,577 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_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 [2021-11-19 13:41:30,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:41:30,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:41:30,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:41:30,938 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:41:30,939 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:41:30,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/termination-numeric/Binomial.c [2021-11-19 13:41:31,023 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/data/18331f960/0f2b50b9c6fb41da90bc8d25a3fb9dab/FLAGcdd26d77d [2021-11-19 13:41:31,538 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:41:31,538 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/sv-benchmarks/c/termination-numeric/Binomial.c [2021-11-19 13:41:31,547 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/data/18331f960/0f2b50b9c6fb41da90bc8d25a3fb9dab/FLAGcdd26d77d [2021-11-19 13:41:31,905 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/data/18331f960/0f2b50b9c6fb41da90bc8d25a3fb9dab [2021-11-19 13:41:31,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:41:31,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:41:31,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:41:31,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:41:31,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:41:31,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:41:31" (1/1) ... [2021-11-19 13:41:31,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69319140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:31, skipping insertion in model container [2021-11-19 13:41:31,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:41:31" (1/1) ... [2021-11-19 13:41:31,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:41:31,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:41:32,109 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:41:32,133 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:41:32,175 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:41:32,189 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:41:32,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:32 WrapperNode [2021-11-19 13:41:32,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:41:32,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:41:32,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:41:32,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:41:32,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:32" (1/1) ... [2021-11-19 13:41:32,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:32" (1/1) ... [2021-11-19 13:41:32,232 INFO L137 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2021-11-19 13:41:32,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:41:32,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:41:32,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:41:32,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:41:32,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:32" (1/1) ... [2021-11-19 13:41:32,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:32" (1/1) ... [2021-11-19 13:41:32,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:32" (1/1) ... [2021-11-19 13:41:32,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:32" (1/1) ... [2021-11-19 13:41:32,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:32" (1/1) ... [2021-11-19 13:41:32,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:32" (1/1) ... [2021-11-19 13:41:32,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:32" (1/1) ... [2021-11-19 13:41:32,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:41:32,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:41:32,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:41:32,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:41:32,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:32" (1/1) ... [2021-11-19 13:41:32,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:41:32,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:41:32,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:41:32,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:41:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2021-11-19 13:41:32,404 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2021-11-19 13:41:32,405 INFO L130 BoogieDeclarations]: Found specification of procedure binomialCoefficient [2021-11-19 13:41:32,405 INFO L138 BoogieDeclarations]: Found implementation of procedure binomialCoefficient [2021-11-19 13:41:32,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:41:32,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:41:32,479 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:41:32,480 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:41:32,707 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:41:32,735 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:41:32,735 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 13:41:32,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:41:32 BoogieIcfgContainer [2021-11-19 13:41:32,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:41:32,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:41:32,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:41:32,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:41:32,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:41:31" (1/3) ... [2021-11-19 13:41:32,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333f5b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:41:32, skipping insertion in model container [2021-11-19 13:41:32,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:32" (2/3) ... [2021-11-19 13:41:32,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333f5b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:41:32, skipping insertion in model container [2021-11-19 13:41:32,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:41:32" (3/3) ... [2021-11-19 13:41:32,752 INFO L111 eAbstractionObserver]: Analyzing ICFG Binomial.c [2021-11-19 13:41:32,760 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:41:32,760 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-19 13:41:32,815 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:41:32,824 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:41:32,824 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-19 13:41:32,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 32 states have (on average 1.625) internal successors, (52), 46 states have internal predecessors, (52), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-19 13:41:32,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 13:41:32,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:32,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 13:41:32,850 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:41:32,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:32,856 INFO L85 PathProgramCache]: Analyzing trace with hash -331574959, now seen corresponding path program 1 times [2021-11-19 13:41:32,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:41:32,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760985647] [2021-11-19 13:41:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:32,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:41:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:33,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:41:33,030 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:41:33,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760985647] [2021-11-19 13:41:33,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760985647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:41:33,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:41:33,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:41:33,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56220604] [2021-11-19 13:41:33,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:33,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:41:33,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:41:33,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:41:33,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:41:33,091 INFO L87 Difference]: Start difference. First operand has 55 states, 32 states have (on average 1.625) internal successors, (52), 46 states have internal predecessors, (52), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:41:33,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:33,225 INFO L93 Difference]: Finished difference Result 110 states and 126 transitions. [2021-11-19 13:41:33,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:41:33,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-19 13:41:33,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:33,238 INFO L225 Difference]: With dead ends: 110 [2021-11-19 13:41:33,238 INFO L226 Difference]: Without dead ends: 54 [2021-11-19 13:41:33,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:41:33,247 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 29 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:33,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 136 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:41:33,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-19 13:41:33,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-19 13:41:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.53125) internal successors, (49), 45 states have internal predecessors, (49), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-19 13:41:33,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2021-11-19 13:41:33,345 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 6 [2021-11-19 13:41:33,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:33,346 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2021-11-19 13:41:33,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:41:33,347 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2021-11-19 13:41:33,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 13:41:33,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:33,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:33,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:41:33,352 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:41:33,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:33,357 INFO L85 PathProgramCache]: Analyzing trace with hash -617882470, now seen corresponding path program 1 times [2021-11-19 13:41:33,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:41:33,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125371472] [2021-11-19 13:41:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:33,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:41:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:33,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:41:33,515 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:41:33,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125371472] [2021-11-19 13:41:33,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125371472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:41:33,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:41:33,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:41:33,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830857685] [2021-11-19 13:41:33,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:33,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:41:33,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:41:33,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:41:33,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:41:33,535 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:41:33,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:33,823 INFO L93 Difference]: Finished difference Result 148 states and 175 transitions. [2021-11-19 13:41:33,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:41:33,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-19 13:41:33,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:33,834 INFO L225 Difference]: With dead ends: 148 [2021-11-19 13:41:33,834 INFO L226 Difference]: Without dead ends: 97 [2021-11-19 13:41:33,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:41:33,844 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 49 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:33,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 283 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:41:33,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-19 13:41:33,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 83. [2021-11-19 13:41:33,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 54 states have (on average 1.5) internal successors, (81), 67 states have internal predecessors, (81), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 13:41:33,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2021-11-19 13:41:33,874 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 12 [2021-11-19 13:41:33,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:33,875 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2021-11-19 13:41:33,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:41:33,876 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2021-11-19 13:41:33,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 13:41:33,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:33,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:33,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 13:41:33,878 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:41:33,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:33,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1305576740, now seen corresponding path program 1 times [2021-11-19 13:41:33,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:41:33,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819368024] [2021-11-19 13:41:33,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:33,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:41:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:33,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:41:33,931 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:41:33,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819368024] [2021-11-19 13:41:33,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819368024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:41:33,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:41:33,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:41:33,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587389453] [2021-11-19 13:41:33,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:33,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:41:33,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:41:33,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:41:33,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:41:33,935 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:41:34,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:34,046 INFO L93 Difference]: Finished difference Result 178 states and 217 transitions. [2021-11-19 13:41:34,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:41:34,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-19 13:41:34,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:34,049 INFO L225 Difference]: With dead ends: 178 [2021-11-19 13:41:34,049 INFO L226 Difference]: Without dead ends: 100 [2021-11-19 13:41:34,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:41:34,053 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 33 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:34,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 161 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:41:34,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-19 13:41:34,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 84. [2021-11-19 13:41:34,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.490909090909091) internal successors, (82), 68 states have internal predecessors, (82), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 13:41:34,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 104 transitions. [2021-11-19 13:41:34,084 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 104 transitions. Word has length 12 [2021-11-19 13:41:34,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:34,084 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 104 transitions. [2021-11-19 13:41:34,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:41:34,085 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 104 transitions. [2021-11-19 13:41:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 13:41:34,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:34,086 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:34,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 13:41:34,087 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:41:34,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:34,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1972461577, now seen corresponding path program 1 times [2021-11-19 13:41:34,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:41:34,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646333249] [2021-11-19 13:41:34,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:34,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:41:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:41:34,212 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:41:34,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646333249] [2021-11-19 13:41:34,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646333249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:41:34,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:41:34,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:41:34,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359689316] [2021-11-19 13:41:34,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:34,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:41:34,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:41:34,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:41:34,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:41:34,215 INFO L87 Difference]: Start difference. First operand 84 states and 104 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 13:41:34,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:34,410 INFO L93 Difference]: Finished difference Result 217 states and 285 transitions. [2021-11-19 13:41:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:41:34,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-19 13:41:34,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:34,413 INFO L225 Difference]: With dead ends: 217 [2021-11-19 13:41:34,413 INFO L226 Difference]: Without dead ends: 139 [2021-11-19 13:41:34,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:41:34,417 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 41 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:34,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 304 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:41:34,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-19 13:41:34,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119. [2021-11-19 13:41:34,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 79 states have (on average 1.5063291139240507) internal successors, (119), 94 states have internal predecessors, (119), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-19 13:41:34,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 157 transitions. [2021-11-19 13:41:34,468 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 157 transitions. Word has length 18 [2021-11-19 13:41:34,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:34,469 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 157 transitions. [2021-11-19 13:41:34,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 13:41:34,469 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 157 transitions. [2021-11-19 13:41:34,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 13:41:34,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:34,470 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:34,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 13:41:34,471 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:41:34,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:34,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2139172673, now seen corresponding path program 1 times [2021-11-19 13:41:34,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:41:34,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950556604] [2021-11-19 13:41:34,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:34,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:41:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 13:41:34,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:41:34,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950556604] [2021-11-19 13:41:34,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950556604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:41:34,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:41:34,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 13:41:34,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830260860] [2021-11-19 13:41:34,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:34,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:41:34,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:41:34,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:41:34,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:41:34,591 INFO L87 Difference]: Start difference. First operand 119 states and 157 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:41:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:34,721 INFO L93 Difference]: Finished difference Result 142 states and 172 transitions. [2021-11-19 13:41:34,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:41:34,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-11-19 13:41:34,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:34,726 INFO L225 Difference]: With dead ends: 142 [2021-11-19 13:41:34,726 INFO L226 Difference]: Without dead ends: 141 [2021-11-19 13:41:34,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:41:34,738 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 61 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:34,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 252 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:41:34,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-19 13:41:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 119. [2021-11-19 13:41:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 79 states have (on average 1.4936708860759493) internal successors, (118), 94 states have internal predecessors, (118), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-19 13:41:34,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2021-11-19 13:41:34,769 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 21 [2021-11-19 13:41:34,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:34,769 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2021-11-19 13:41:34,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:41:34,770 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2021-11-19 13:41:34,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 13:41:34,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:34,771 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:34,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 13:41:34,772 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:41:34,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:34,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1889843477, now seen corresponding path program 1 times [2021-11-19 13:41:34,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:41:34,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770264788] [2021-11-19 13:41:34,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:34,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:41:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 13:41:34,878 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:41:34,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770264788] [2021-11-19 13:41:34,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770264788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:41:34,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:41:34,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 13:41:34,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585915413] [2021-11-19 13:41:34,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:34,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:41:34,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:41:34,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:41:34,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:41:34,884 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:41:35,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:35,007 INFO L93 Difference]: Finished difference Result 155 states and 192 transitions. [2021-11-19 13:41:35,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:41:35,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-11-19 13:41:35,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:35,013 INFO L225 Difference]: With dead ends: 155 [2021-11-19 13:41:35,013 INFO L226 Difference]: Without dead ends: 154 [2021-11-19 13:41:35,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:41:35,019 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 58 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:35,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 247 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:41:35,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-19 13:41:35,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 133. [2021-11-19 13:41:35,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 104 states have internal predecessors, (130), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 13:41:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 174 transitions. [2021-11-19 13:41:35,062 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 174 transitions. Word has length 22 [2021-11-19 13:41:35,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:35,063 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 174 transitions. [2021-11-19 13:41:35,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:41:35,063 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 174 transitions. [2021-11-19 13:41:35,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 13:41:35,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:35,064 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:35,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 13:41:35,065 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:41:35,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:35,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1358741676, now seen corresponding path program 1 times [2021-11-19 13:41:35,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:41:35,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301693076] [2021-11-19 13:41:35,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:35,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:41:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:35,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 13:41:35,178 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:41:35,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301693076] [2021-11-19 13:41:35,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301693076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:41:35,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:41:35,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:41:35,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241661214] [2021-11-19 13:41:35,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:35,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:41:35,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:41:35,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:41:35,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:41:35,182 INFO L87 Difference]: Start difference. First operand 133 states and 174 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:41:35,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:35,385 INFO L93 Difference]: Finished difference Result 278 states and 362 transitions. [2021-11-19 13:41:35,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:41:35,385 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-11-19 13:41:35,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:35,388 INFO L225 Difference]: With dead ends: 278 [2021-11-19 13:41:35,388 INFO L226 Difference]: Without dead ends: 160 [2021-11-19 13:41:35,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:41:35,390 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 61 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:35,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 343 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:41:35,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-19 13:41:35,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 137. [2021-11-19 13:41:35,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 92 states have (on average 1.4456521739130435) internal successors, (133), 107 states have internal predecessors, (133), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 13:41:35,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 177 transitions. [2021-11-19 13:41:35,408 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 177 transitions. Word has length 26 [2021-11-19 13:41:35,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:35,409 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 177 transitions. [2021-11-19 13:41:35,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:41:35,409 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 177 transitions. [2021-11-19 13:41:35,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:41:35,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:35,410 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:35,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 13:41:35,411 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:41:35,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:35,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1792966406, now seen corresponding path program 1 times [2021-11-19 13:41:35,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:41:35,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972798418] [2021-11-19 13:41:35,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:35,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:41:35,425 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:41:35,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525181437] [2021-11-19 13:41:35,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:35,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:41:35,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:41:35,428 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:41:35,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 13:41:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:35,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:41:35,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:41:35,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:41:35,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:41:35,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972798418] [2021-11-19 13:41:35,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:41:35,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525181437] [2021-11-19 13:41:35,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525181437] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:41:35,956 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:41:35,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2021-11-19 13:41:35,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259092533] [2021-11-19 13:41:35,957 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:35,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:41:35,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:41:35,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:41:35,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:41:35,959 INFO L87 Difference]: Start difference. First operand 137 states and 177 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 13:41:36,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:36,092 INFO L93 Difference]: Finished difference Result 201 states and 283 transitions. [2021-11-19 13:41:36,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:41:36,094 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 29 [2021-11-19 13:41:36,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:36,101 INFO L225 Difference]: With dead ends: 201 [2021-11-19 13:41:36,109 INFO L226 Difference]: Without dead ends: 199 [2021-11-19 13:41:36,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:41:36,111 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 59 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:36,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 189 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:41:36,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-19 13:41:36,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 169. [2021-11-19 13:41:36,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 120 states have (on average 1.35) internal successors, (162), 129 states have internal predecessors, (162), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (39), 30 states have call predecessors, (39), 25 states have call successors, (39) [2021-11-19 13:41:36,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 226 transitions. [2021-11-19 13:41:36,142 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 226 transitions. Word has length 29 [2021-11-19 13:41:36,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:36,143 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 226 transitions. [2021-11-19 13:41:36,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 13:41:36,143 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 226 transitions. [2021-11-19 13:41:36,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 13:41:36,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:36,145 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:36,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:36,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:41:36,362 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:41:36,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:36,362 INFO L85 PathProgramCache]: Analyzing trace with hash 758832392, now seen corresponding path program 1 times [2021-11-19 13:41:36,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:41:36,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97543031] [2021-11-19 13:41:36,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:36,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:41:36,369 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:41:36,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546252889] [2021-11-19 13:41:36,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:36,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:41:36,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:41:36,371 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:41:36,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 13:41:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:36,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:41:36,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:41:36,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:03,813 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_4| Int) (|v_binomialCoefficient_#t~ret3_AFTER_RETURN_2| Int) (|v_binomialCoefficient_#t~ret1_BEFORE_CALL_3| Int)) (let ((.cse5 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_4| |v_binomialCoefficient_#t~ret3_AFTER_RETURN_2|))) (let ((.cse0 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_3| .cse5)) (.cse4 (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_3| .cse5) 0))) (or (< |v_binomialCoefficient_#t~ret3_AFTER_RETURN_2| |c_fact_#res|) (<= .cse0 2147483646) (exists ((|v_binomialCoefficient_#t~ret3_20| Int)) (let ((.cse3 (* |v_binomialCoefficient_#t~ret3_20| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_4|))) (let ((.cse2 (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_3| (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_4| |v_binomialCoefficient_#t~ret3_20|)) 0)) (.cse1 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_3| .cse3))) (and (<= 1 |v_binomialCoefficient_#t~ret3_20|) (< 2147483646 .cse1) (or (and (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_3| 0) (not .cse2)) (< 2147483647 .cse1)) (or (<= 0 .cse3) .cse2 (< 2147483648 .cse1)))))) (and (or (<= 0 |v_binomialCoefficient_#t~ret1_BEFORE_CALL_3|) .cse4) (<= .cse0 2147483647)) (and (< .cse5 0) (<= .cse0 2147483648) (not .cse4)))))) is different from false [2021-11-19 13:42:42,154 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_binomialCoefficient_#t~ret2_AFTER_RETURN_2| Int) (|v_binomialCoefficient_#t~ret1_BEFORE_CALL_4| Int)) (or (exists ((|v_binomialCoefficient_#t~ret3_20| Int) (|v_binomialCoefficient_#t~ret2_20| Int)) (and (<= 1 |v_binomialCoefficient_#t~ret3_20|) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_4| (* |v_binomialCoefficient_#t~ret3_20| |v_binomialCoefficient_#t~ret2_20|))) (<= 1 |v_binomialCoefficient_#t~ret2_20|))) (forall ((|v_binomialCoefficient_#t~ret3_20| Int)) (let ((.cse2 (* |v_binomialCoefficient_#t~ret3_20| |v_binomialCoefficient_#t~ret2_AFTER_RETURN_2|))) (let ((.cse0 (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_4| (* |v_binomialCoefficient_#t~ret2_AFTER_RETURN_2| |v_binomialCoefficient_#t~ret3_20|)) 0)) (.cse1 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_4| .cse2))) (or (and (or (<= 0 |v_binomialCoefficient_#t~ret1_BEFORE_CALL_4|) .cse0) (<= .cse1 2147483647)) (and (< .cse2 0) (not .cse0) (<= .cse1 2147483648)) (<= .cse1 2147483646) (< |v_binomialCoefficient_#t~ret3_20| 1))))) (< |v_binomialCoefficient_#t~ret2_AFTER_RETURN_2| |c_fact_#res|))) is different from false [2021-11-19 13:42:48,198 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 6 not checked. [2021-11-19 13:42:48,198 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:48,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97543031] [2021-11-19 13:42:48,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:42:48,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546252889] [2021-11-19 13:42:48,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546252889] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:42:48,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1893561113] [2021-11-19 13:42:48,224 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-19 13:42:48,224 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:42:48,230 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:42:48,237 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:42:48,238 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:42:48,276 INFO L180 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-11-19 13:42:48,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-19 13:42:48,281 INFO L180 QuantifierPusher]: treesize reduction 6, result has 82.4 percent of original size [2021-11-19 13:42:48,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 13:42:48,288 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:48,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 13:42:48,294 INFO L197 IcfgInterpreter]: Interpreting procedure binomialCoefficient with input of size 6 for LOIs [2021-11-19 13:42:48,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:48,318 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-19 13:42:48,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:48,335 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-19 13:42:48,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:48,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-19 13:42:48,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:48,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-19 13:42:48,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,431 INFO L180 QuantifierPusher]: treesize reduction 26, result has 55.2 percent of original size [2021-11-19 13:42:48,434 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-19 13:42:48,437 INFO L180 QuantifierPusher]: treesize reduction 26, result has 62.9 percent of original size [2021-11-19 13:42:48,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:42:48,443 INFO L180 QuantifierPusher]: treesize reduction 26, result has 55.2 percent of original size [2021-11-19 13:42:48,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-19 13:42:48,449 INFO L180 QuantifierPusher]: treesize reduction 26, result has 62.9 percent of original size [2021-11-19 13:42:48,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:42:48,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,510 INFO L180 QuantifierPusher]: treesize reduction 34, result has 58.0 percent of original size [2021-11-19 13:42:48,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-19 13:42:48,530 INFO L180 QuantifierPusher]: treesize reduction 34, result has 63.4 percent of original size [2021-11-19 13:42:48,533 INFO L185 QuantifierPusher]: treesize reduction 5, result has 89.4 percent of original size 42 [2021-11-19 13:42:48,537 INFO L180 QuantifierPusher]: treesize reduction 34, result has 58.0 percent of original size [2021-11-19 13:42:48,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-19 13:42:48,543 INFO L180 QuantifierPusher]: treesize reduction 34, result has 63.4 percent of original size [2021-11-19 13:42:48,546 INFO L185 QuantifierPusher]: treesize reduction 5, result has 89.4 percent of original size 42 [2021-11-19 13:42:48,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,587 INFO L180 QuantifierPusher]: treesize reduction 34, result has 58.0 percent of original size [2021-11-19 13:42:48,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-19 13:42:48,593 INFO L180 QuantifierPusher]: treesize reduction 26, result has 55.2 percent of original size [2021-11-19 13:42:48,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-19 13:42:48,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,600 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:48,602 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-19 13:42:48,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:48,608 INFO L197 IcfgInterpreter]: Interpreting procedure fact with input of size 6 for LOIs [2021-11-19 13:42:48,611 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:42:49,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1893561113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:49,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:42:49,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6, 7] total 24 [2021-11-19 13:42:49,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479017958] [2021-11-19 13:42:49,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:49,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:42:49,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:49,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:42:49,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=420, Unknown=2, NotChecked=86, Total=600 [2021-11-19 13:42:49,509 INFO L87 Difference]: Start difference. First operand 169 states and 226 transitions. Second operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 13:42:49,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:49,753 INFO L93 Difference]: Finished difference Result 191 states and 242 transitions. [2021-11-19 13:42:49,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:42:49,753 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2021-11-19 13:42:49,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:49,756 INFO L225 Difference]: With dead ends: 191 [2021-11-19 13:42:49,756 INFO L226 Difference]: Without dead ends: 189 [2021-11-19 13:42:49,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 58 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=92, Invalid=420, Unknown=2, NotChecked=86, Total=600 [2021-11-19 13:42:49,758 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 126 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:49,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 239 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:42:49,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-19 13:42:49,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 177. [2021-11-19 13:42:49,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 126 states have (on average 1.3174603174603174) internal successors, (166), 135 states have internal predecessors, (166), 25 states have call successors, (25), 11 states have call predecessors, (25), 12 states have return successors, (39), 30 states have call predecessors, (39), 25 states have call successors, (39) [2021-11-19 13:42:49,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 230 transitions. [2021-11-19 13:42:49,776 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 230 transitions. Word has length 31 [2021-11-19 13:42:49,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:49,777 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 230 transitions. [2021-11-19 13:42:49,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 13:42:49,777 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 230 transitions. [2021-11-19 13:42:49,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 13:42:49,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:49,779 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:49,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:42:49,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:42:49,994 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:42:49,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:49,995 INFO L85 PathProgramCache]: Analyzing trace with hash 995749568, now seen corresponding path program 1 times [2021-11-19 13:42:49,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:49,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413131597] [2021-11-19 13:42:49,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:49,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:50,005 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:42:50,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532051135] [2021-11-19 13:42:50,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:50,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:42:50,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:42:50,007 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:42:50,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 13:42:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:50,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:42:50,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 13:42:50,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 13:42:50,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:50,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413131597] [2021-11-19 13:42:50,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:42:50,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532051135] [2021-11-19 13:42:50,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532051135] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:50,275 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:50,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:42:50,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771713160] [2021-11-19 13:42:50,275 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:50,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:42:50,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:50,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:42:50,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:42:50,277 INFO L87 Difference]: Start difference. First operand 177 states and 230 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 13:42:50,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:50,386 INFO L93 Difference]: Finished difference Result 213 states and 280 transitions. [2021-11-19 13:42:50,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:42:50,387 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), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2021-11-19 13:42:50,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:50,389 INFO L225 Difference]: With dead ends: 213 [2021-11-19 13:42:50,389 INFO L226 Difference]: Without dead ends: 212 [2021-11-19 13:42:50,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:42:50,391 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 21 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:50,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 226 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:42:50,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-19 13:42:50,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 203. [2021-11-19 13:42:50,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 147 states have (on average 1.3129251700680271) internal successors, (193), 154 states have internal predecessors, (193), 30 states have call successors, (30), 11 states have call predecessors, (30), 12 states have return successors, (44), 37 states have call predecessors, (44), 30 states have call successors, (44) [2021-11-19 13:42:50,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 267 transitions. [2021-11-19 13:42:50,412 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 267 transitions. Word has length 36 [2021-11-19 13:42:50,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:50,413 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 267 transitions. [2021-11-19 13:42:50,413 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), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 13:42:50,413 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 267 transitions. [2021-11-19 13:42:50,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-19 13:42:50,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:50,415 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:50,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:42:50,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:42:50,630 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:42:50,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:50,630 INFO L85 PathProgramCache]: Analyzing trace with hash 803465645, now seen corresponding path program 1 times [2021-11-19 13:42:50,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:50,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57798125] [2021-11-19 13:42:50,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:50,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:50,639 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:42:50,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170762992] [2021-11-19 13:42:50,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:50,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:42:50,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:42:50,641 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:42:50,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 13:42:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:50,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:42:50,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 13:42:50,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 13:42:50,877 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:50,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57798125] [2021-11-19 13:42:50,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:42:50,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170762992] [2021-11-19 13:42:50,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170762992] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:50,878 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:50,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:42:50,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146635751] [2021-11-19 13:42:50,878 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:50,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:42:50,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:50,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:42:50,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:42:50,880 INFO L87 Difference]: Start difference. First operand 203 states and 267 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 13:42:50,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:50,927 INFO L93 Difference]: Finished difference Result 203 states and 267 transitions. [2021-11-19 13:42:50,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:42:50,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 37 [2021-11-19 13:42:50,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:50,934 INFO L225 Difference]: With dead ends: 203 [2021-11-19 13:42:50,934 INFO L226 Difference]: Without dead ends: 202 [2021-11-19 13:42:50,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:42:50,936 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 11 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:50,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 230 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:42:50,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-19 13:42:50,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-11-19 13:42:50,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 147 states have (on average 1.2857142857142858) internal successors, (189), 153 states have internal predecessors, (189), 30 states have call successors, (30), 11 states have call predecessors, (30), 12 states have return successors, (44), 37 states have call predecessors, (44), 30 states have call successors, (44) [2021-11-19 13:42:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 263 transitions. [2021-11-19 13:42:50,964 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 263 transitions. Word has length 37 [2021-11-19 13:42:50,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:50,964 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 263 transitions. [2021-11-19 13:42:50,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 13:42:50,965 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 263 transitions. [2021-11-19 13:42:50,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-19 13:42:50,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:50,968 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:51,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:42:51,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:42:51,174 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:42:51,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:51,174 INFO L85 PathProgramCache]: Analyzing trace with hash -963624011, now seen corresponding path program 1 times [2021-11-19 13:42:51,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:51,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484909956] [2021-11-19 13:42:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:51,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:51,185 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:42:51,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486460261] [2021-11-19 13:42:51,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:51,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:42:51,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:42:51,186 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:42:51,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 13:42:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:51,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:42:51,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-19 13:42:51,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-19 13:42:51,439 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:51,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484909956] [2021-11-19 13:42:51,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:42:51,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486460261] [2021-11-19 13:42:51,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486460261] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:51,440 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:51,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:42:51,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294602150] [2021-11-19 13:42:51,444 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:51,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:42:51,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:51,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:42:51,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:42:51,446 INFO L87 Difference]: Start difference. First operand 202 states and 263 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 13:42:51,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:51,533 INFO L93 Difference]: Finished difference Result 238 states and 310 transitions. [2021-11-19 13:42:51,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:42:51,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 39 [2021-11-19 13:42:51,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:51,541 INFO L225 Difference]: With dead ends: 238 [2021-11-19 13:42:51,541 INFO L226 Difference]: Without dead ends: 237 [2021-11-19 13:42:51,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:42:51,543 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 15 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:51,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 259 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:42:51,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-19 13:42:51,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 232. [2021-11-19 13:42:51,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 171 states have (on average 1.286549707602339) internal successors, (220), 177 states have internal predecessors, (220), 36 states have call successors, (36), 11 states have call predecessors, (36), 12 states have return successors, (50), 43 states have call predecessors, (50), 36 states have call successors, (50) [2021-11-19 13:42:51,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 306 transitions. [2021-11-19 13:42:51,578 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 306 transitions. Word has length 39 [2021-11-19 13:42:51,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:51,578 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 306 transitions. [2021-11-19 13:42:51,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 13:42:51,579 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 306 transitions. [2021-11-19 13:42:51,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 13:42:51,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:51,580 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:51,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:42:51,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-11-19 13:42:51,786 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:42:51,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:51,787 INFO L85 PathProgramCache]: Analyzing trace with hash 192426848, now seen corresponding path program 1 times [2021-11-19 13:42:51,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:51,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130223800] [2021-11-19 13:42:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:51,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:51,801 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:42:51,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881413251] [2021-11-19 13:42:51,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:51,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:42:51,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:42:51,803 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:42:51,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 13:42:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:51,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:42:51,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:51,963 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-19 13:42:51,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:52,082 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-19 13:42:52,082 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:52,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130223800] [2021-11-19 13:42:52,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:42:52,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881413251] [2021-11-19 13:42:52,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881413251] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:52,083 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:52,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:42:52,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357940538] [2021-11-19 13:42:52,083 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:52,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:42:52,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:52,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:42:52,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:42:52,084 INFO L87 Difference]: Start difference. First operand 232 states and 306 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 13:42:52,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:52,136 INFO L93 Difference]: Finished difference Result 232 states and 306 transitions. [2021-11-19 13:42:52,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:42:52,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 40 [2021-11-19 13:42:52,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:52,145 INFO L225 Difference]: With dead ends: 232 [2021-11-19 13:42:52,146 INFO L226 Difference]: Without dead ends: 231 [2021-11-19 13:42:52,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:42:52,147 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 7 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:52,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 225 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:42:52,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-19 13:42:52,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2021-11-19 13:42:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 171 states have (on average 1.2748538011695907) internal successors, (218), 176 states have internal predecessors, (218), 36 states have call successors, (36), 11 states have call predecessors, (36), 12 states have return successors, (50), 43 states have call predecessors, (50), 36 states have call successors, (50) [2021-11-19 13:42:52,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 304 transitions. [2021-11-19 13:42:52,168 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 304 transitions. Word has length 40 [2021-11-19 13:42:52,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:52,169 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 304 transitions. [2021-11-19 13:42:52,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 13:42:52,169 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 304 transitions. [2021-11-19 13:42:52,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 13:42:52,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:52,171 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:52,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:42:52,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-11-19 13:42:52,398 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:42:52,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:52,398 INFO L85 PathProgramCache]: Analyzing trace with hash 23319104, now seen corresponding path program 1 times [2021-11-19 13:42:52,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:52,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059982213] [2021-11-19 13:42:52,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:52,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:52,406 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:42:52,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992529781] [2021-11-19 13:42:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:52,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:42:52,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:42:52,409 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:42:52,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 13:42:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:52,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:42:52,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 13:42:52,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:52,844 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 13:42:52,844 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:52,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059982213] [2021-11-19 13:42:52,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:42:52,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992529781] [2021-11-19 13:42:52,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992529781] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:42:52,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [556867555] [2021-11-19 13:42:52,849 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2021-11-19 13:42:52,849 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:42:52,850 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:42:52,850 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:42:52,851 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:42:52,874 INFO L180 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-11-19 13:42:52,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-19 13:42:52,878 INFO L180 QuantifierPusher]: treesize reduction 6, result has 82.4 percent of original size [2021-11-19 13:42:52,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 13:42:52,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:52,896 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 13:42:52,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:52,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:52,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:52,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 13:42:52,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:52,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:52,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:52,927 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 13:42:52,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:52,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:52,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:52,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:52,941 INFO L180 QuantifierPusher]: treesize reduction 14, result has 58.8 percent of original size [2021-11-19 13:42:52,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:52,946 INFO L180 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size [2021-11-19 13:42:52,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 13:42:52,949 INFO L180 QuantifierPusher]: treesize reduction 14, result has 58.8 percent of original size [2021-11-19 13:42:52,951 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:52,953 INFO L180 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size [2021-11-19 13:42:52,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 13:42:52,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:52,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:52,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:52,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:52,971 INFO L180 QuantifierPusher]: treesize reduction 22, result has 65.1 percent of original size [2021-11-19 13:42:52,974 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-19 13:42:52,976 INFO L180 QuantifierPusher]: treesize reduction 22, result has 70.7 percent of original size [2021-11-19 13:42:52,978 INFO L185 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size 36 [2021-11-19 13:42:52,981 INFO L180 QuantifierPusher]: treesize reduction 22, result has 65.1 percent of original size [2021-11-19 13:42:52,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-19 13:42:52,986 INFO L180 QuantifierPusher]: treesize reduction 22, result has 70.7 percent of original size [2021-11-19 13:42:52,988 INFO L185 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size 36 [2021-11-19 13:42:52,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:52,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,019 INFO L180 QuantifierPusher]: treesize reduction 31, result has 95.4 percent of original size [2021-11-19 13:42:53,021 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 13:42:53,023 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,027 INFO L185 QuantifierPusher]: treesize reduction 11, result has 79.2 percent of original size 42 [2021-11-19 13:42:53,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 13:42:53,040 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,042 INFO L185 QuantifierPusher]: treesize reduction 11, result has 79.2 percent of original size 42 [2021-11-19 13:42:53,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,079 INFO L180 QuantifierPusher]: treesize reduction 31, result has 58.1 percent of original size [2021-11-19 13:42:53,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:42:53,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,088 INFO L185 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-11-19 13:42:53,092 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,093 INFO L185 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-11-19 13:42:53,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,198 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,201 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,203 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,205 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:42:53,211 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,213 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,215 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,220 INFO L185 QuantifierPusher]: treesize reduction 12, result has 69.2 percent of original size 27 [2021-11-19 13:42:53,222 INFO L185 QuantifierPusher]: treesize reduction 24, result has 74.2 percent of original size 69 [2021-11-19 13:42:53,231 INFO L185 QuantifierPusher]: treesize reduction 24, result has 75.5 percent of original size 74 [2021-11-19 13:42:53,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,258 INFO L180 QuantifierPusher]: treesize reduction 6, result has 86.0 percent of original size [2021-11-19 13:42:53,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-19 13:42:53,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,283 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:42:53,289 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,290 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,292 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,293 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,295 INFO L185 QuantifierPusher]: treesize reduction 12, result has 69.2 percent of original size 27 [2021-11-19 13:42:53,298 INFO L185 QuantifierPusher]: treesize reduction 24, result has 74.2 percent of original size 69 [2021-11-19 13:42:53,301 INFO L185 QuantifierPusher]: treesize reduction 24, result has 75.3 percent of original size 73 [2021-11-19 13:42:53,304 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,307 INFO L185 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size 113 [2021-11-19 13:42:53,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,335 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,338 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:42:53,346 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,349 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,350 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,353 INFO L185 QuantifierPusher]: treesize reduction 12, result has 69.2 percent of original size 27 [2021-11-19 13:42:53,355 INFO L185 QuantifierPusher]: treesize reduction 24, result has 74.2 percent of original size 69 [2021-11-19 13:42:53,359 INFO L185 QuantifierPusher]: treesize reduction 24, result has 75.3 percent of original size 73 [2021-11-19 13:42:53,361 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,364 INFO L185 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size 113 [2021-11-19 13:42:53,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,428 INFO L180 QuantifierPusher]: treesize reduction 20, result has 63.0 percent of original size [2021-11-19 13:42:53,430 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 13:42:53,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,467 INFO L197 IcfgInterpreter]: Interpreting procedure binomialCoefficient with input of size 12 for LOIs [2021-11-19 13:42:53,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,472 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,473 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:53,476 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 13:42:53,477 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-19 13:42:53,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,485 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:53,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 13:42:53,490 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-19 13:42:53,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,527 INFO L180 QuantifierPusher]: treesize reduction 20, result has 77.3 percent of original size [2021-11-19 13:42:53,531 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,534 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:42:53,536 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,541 INFO L185 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size 27 [2021-11-19 13:42:53,542 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,543 INFO L180 QuantifierPusher]: treesize reduction 3, result has 92.1 percent of original size [2021-11-19 13:42:53,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-19 13:42:53,547 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-19 13:42:53,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-19 13:42:53,554 INFO L180 QuantifierPusher]: treesize reduction 20, result has 80.0 percent of original size [2021-11-19 13:42:53,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-19 13:42:53,560 INFO L180 QuantifierPusher]: treesize reduction 20, result has 77.3 percent of original size [2021-11-19 13:42:53,564 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,565 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:42:53,568 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,571 INFO L185 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size 27 [2021-11-19 13:42:53,572 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,573 INFO L180 QuantifierPusher]: treesize reduction 3, result has 92.1 percent of original size [2021-11-19 13:42:53,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-19 13:42:53,577 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-19 13:42:53,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-19 13:42:53,584 INFO L180 QuantifierPusher]: treesize reduction 20, result has 80.0 percent of original size [2021-11-19 13:42:53,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-19 13:42:53,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,645 INFO L180 QuantifierPusher]: treesize reduction 22, result has 80.7 percent of original size [2021-11-19 13:42:53,651 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,652 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-19 13:42:53,656 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,657 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,667 INFO L185 QuantifierPusher]: treesize reduction 6, result has 87.8 percent of original size 43 [2021-11-19 13:42:53,667 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,669 INFO L180 QuantifierPusher]: treesize reduction 6, result has 88.9 percent of original size [2021-11-19 13:42:53,672 INFO L185 QuantifierPusher]: treesize reduction 6, result has 84.6 percent of original size 33 [2021-11-19 13:42:53,673 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,674 INFO L180 QuantifierPusher]: treesize reduction 6, result has 87.2 percent of original size [2021-11-19 13:42:53,677 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-19 13:42:53,678 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,678 INFO L180 QuantifierPusher]: treesize reduction 7, result has 36.4 percent of original size [2021-11-19 13:42:53,679 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:53,680 INFO L185 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size 7 [2021-11-19 13:42:53,684 INFO L180 QuantifierPusher]: treesize reduction 22, result has 82.5 percent of original size [2021-11-19 13:42:53,686 INFO L185 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size 87 [2021-11-19 13:42:53,691 INFO L180 QuantifierPusher]: treesize reduction 22, result has 80.7 percent of original size [2021-11-19 13:42:53,696 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,697 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,700 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-19 13:42:53,701 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,702 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,705 INFO L185 QuantifierPusher]: treesize reduction 6, result has 90.0 percent of original size 54 [2021-11-19 13:42:53,705 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,707 INFO L180 QuantifierPusher]: treesize reduction 6, result has 90.8 percent of original size [2021-11-19 13:42:53,710 INFO L185 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size 33 [2021-11-19 13:42:53,711 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,712 INFO L180 QuantifierPusher]: treesize reduction 10, result has 80.4 percent of original size [2021-11-19 13:42:53,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-19 13:42:53,716 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,716 INFO L180 QuantifierPusher]: treesize reduction 7, result has 36.4 percent of original size [2021-11-19 13:42:53,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:53,718 INFO L185 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size 7 [2021-11-19 13:42:53,721 INFO L180 QuantifierPusher]: treesize reduction 22, result has 82.5 percent of original size [2021-11-19 13:42:53,723 INFO L185 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size 87 [2021-11-19 13:42:53,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,811 INFO L180 QuantifierPusher]: treesize reduction 18, result has 95.8 percent of original size [2021-11-19 13:42:53,815 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,822 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 243 [2021-11-19 13:42:53,838 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,853 INFO L185 QuantifierPusher]: treesize reduction 16, result has 92.2 percent of original size 189 [2021-11-19 13:42:53,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-19 13:42:53,862 INFO L180 QuantifierPusher]: treesize reduction 22, result has 80.7 percent of original size [2021-11-19 13:42:53,867 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,868 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,871 INFO L185 QuantifierPusher]: treesize reduction 6, result has 90.9 percent of original size 60 [2021-11-19 13:42:53,872 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,873 INFO L180 QuantifierPusher]: treesize reduction 6, result has 91.5 percent of original size [2021-11-19 13:42:53,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-19 13:42:53,877 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,878 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,881 INFO L185 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size 33 [2021-11-19 13:42:53,881 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,882 INFO L180 QuantifierPusher]: treesize reduction 10, result has 80.4 percent of original size [2021-11-19 13:42:53,885 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-19 13:42:53,885 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,886 INFO L180 QuantifierPusher]: treesize reduction 7, result has 36.4 percent of original size [2021-11-19 13:42:53,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:53,888 INFO L185 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size 7 [2021-11-19 13:42:53,890 INFO L180 QuantifierPusher]: treesize reduction 20, result has 77.3 percent of original size [2021-11-19 13:42:53,894 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,895 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,896 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:42:53,897 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,897 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,900 INFO L185 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size 27 [2021-11-19 13:42:53,900 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,901 INFO L180 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-11-19 13:42:53,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-19 13:42:53,905 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,908 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-19 13:42:53,909 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-19 13:42:53,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,917 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:53,917 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:53,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:53,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 13:42:53,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:53,926 INFO L197 IcfgInterpreter]: Interpreting procedure fact with input of size 9 for LOIs [2021-11-19 13:42:53,930 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:42:55,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [556867555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:55,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:42:55,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [8, 8] total 34 [2021-11-19 13:42:55,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829275343] [2021-11-19 13:42:55,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:55,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 13:42:55,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:55,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 13:42:55,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1004, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 13:42:55,686 INFO L87 Difference]: Start difference. First operand 231 states and 304 transitions. Second operand has 21 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 13:42:56,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:56,369 INFO L93 Difference]: Finished difference Result 503 states and 686 transitions. [2021-11-19 13:42:56,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 13:42:56,370 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 45 [2021-11-19 13:42:56,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:56,374 INFO L225 Difference]: With dead ends: 503 [2021-11-19 13:42:56,374 INFO L226 Difference]: Without dead ends: 307 [2021-11-19 13:42:56,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 89 SyntacticMatches, 11 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=186, Invalid=1004, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 13:42:56,378 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 107 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:56,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 419 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:42:56,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-19 13:42:56,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 290. [2021-11-19 13:42:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 215 states have (on average 1.255813953488372) internal successors, (270), 221 states have internal predecessors, (270), 46 states have call successors, (46), 15 states have call predecessors, (46), 17 states have return successors, (61), 53 states have call predecessors, (61), 45 states have call successors, (61) [2021-11-19 13:42:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 377 transitions. [2021-11-19 13:42:56,409 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 377 transitions. Word has length 45 [2021-11-19 13:42:56,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:56,410 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 377 transitions. [2021-11-19 13:42:56,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 13:42:56,411 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 377 transitions. [2021-11-19 13:42:56,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-19 13:42:56,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:56,413 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:56,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:42:56,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:42:56,638 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:42:56,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:56,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2043685447, now seen corresponding path program 1 times [2021-11-19 13:42:56,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:56,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743098627] [2021-11-19 13:42:56,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:56,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:56,643 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:42:56,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138622162] [2021-11-19 13:42:56,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:56,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:42:56,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:42:56,645 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:42:56,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 13:42:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:56,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:42:56,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:56,888 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 13:42:56,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 13:42:57,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:57,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743098627] [2021-11-19 13:42:57,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:42:57,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138622162] [2021-11-19 13:42:57,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138622162] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:42:57,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [481280051] [2021-11-19 13:42:57,079 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-19 13:42:57,080 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:42:57,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:42:57,080 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:42:57,080 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:42:57,103 INFO L180 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-11-19 13:42:57,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-19 13:42:57,106 INFO L180 QuantifierPusher]: treesize reduction 6, result has 82.4 percent of original size [2021-11-19 13:42:57,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 13:42:57,112 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 13:42:57,124 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,126 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:57,130 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 13:42:57,134 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:57,137 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 13:42:57,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,149 INFO L180 QuantifierPusher]: treesize reduction 14, result has 58.8 percent of original size [2021-11-19 13:42:57,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:57,155 INFO L180 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size [2021-11-19 13:42:57,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 13:42:57,159 INFO L180 QuantifierPusher]: treesize reduction 14, result has 58.8 percent of original size [2021-11-19 13:42:57,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:57,164 INFO L180 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size [2021-11-19 13:42:57,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 13:42:57,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,177 INFO L180 QuantifierPusher]: treesize reduction 22, result has 65.1 percent of original size [2021-11-19 13:42:57,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-19 13:42:57,182 INFO L180 QuantifierPusher]: treesize reduction 22, result has 70.7 percent of original size [2021-11-19 13:42:57,184 INFO L185 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size 36 [2021-11-19 13:42:57,192 INFO L180 QuantifierPusher]: treesize reduction 22, result has 65.1 percent of original size [2021-11-19 13:42:57,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-19 13:42:57,199 INFO L180 QuantifierPusher]: treesize reduction 22, result has 70.7 percent of original size [2021-11-19 13:42:57,202 INFO L185 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size 36 [2021-11-19 13:42:57,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,243 INFO L180 QuantifierPusher]: treesize reduction 31, result has 95.4 percent of original size [2021-11-19 13:42:57,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 13:42:57,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,250 INFO L185 QuantifierPusher]: treesize reduction 11, result has 79.2 percent of original size 42 [2021-11-19 13:42:57,251 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 13:42:57,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,260 INFO L185 QuantifierPusher]: treesize reduction 11, result has 79.2 percent of original size 42 [2021-11-19 13:42:57,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,274 INFO L180 QuantifierPusher]: treesize reduction 31, result has 58.1 percent of original size [2021-11-19 13:42:57,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:42:57,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-19 13:42:57,290 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,292 INFO L185 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size 35 [2021-11-19 13:42:57,293 INFO L180 QuantifierPusher]: treesize reduction 7, result has 85.7 percent of original size [2021-11-19 13:42:57,295 INFO L185 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size 30 [2021-11-19 13:42:57,298 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,301 INFO L185 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size 35 [2021-11-19 13:42:57,303 INFO L180 QuantifierPusher]: treesize reduction 7, result has 85.7 percent of original size [2021-11-19 13:42:57,305 INFO L185 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size 30 [2021-11-19 13:42:57,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,327 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,328 INFO L185 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-11-19 13:42:57,332 INFO L180 QuantifierPusher]: treesize reduction 7, result has 87.7 percent of original size [2021-11-19 13:42:57,333 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 13:42:57,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,336 INFO L185 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size 30 [2021-11-19 13:42:57,339 INFO L180 QuantifierPusher]: treesize reduction 7, result has 87.7 percent of original size [2021-11-19 13:42:57,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 13:42:57,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,371 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,373 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,375 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,376 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,379 INFO L185 QuantifierPusher]: treesize reduction 3, result has 94.2 percent of original size 49 [2021-11-19 13:42:57,382 INFO L185 QuantifierPusher]: treesize reduction 6, result has 95.1 percent of original size 116 [2021-11-19 13:42:57,387 INFO L185 QuantifierPusher]: treesize reduction 6, result has 95.3 percent of original size 123 [2021-11-19 13:42:57,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,426 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-19 13:42:57,432 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,434 INFO L185 QuantifierPusher]: treesize reduction 11, result has 82.5 percent of original size 52 [2021-11-19 13:42:57,438 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-19 13:42:57,444 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,446 INFO L185 QuantifierPusher]: treesize reduction 11, result has 82.5 percent of original size 52 [2021-11-19 13:42:57,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,494 INFO L180 QuantifierPusher]: treesize reduction 39, result has 69.8 percent of original size [2021-11-19 13:42:57,498 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-19 13:42:57,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-19 13:42:57,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,567 INFO L197 IcfgInterpreter]: Interpreting procedure binomialCoefficient with input of size 13 for LOIs [2021-11-19 13:42:57,574 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,577 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,577 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,579 INFO L185 QuantifierPusher]: treesize reduction 8, result has 27.3 percent of original size 3 [2021-11-19 13:42:57,580 INFO L185 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size 7 [2021-11-19 13:42:57,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-19 13:42:57,587 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,590 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,591 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,592 INFO L185 QuantifierPusher]: treesize reduction 8, result has 27.3 percent of original size 3 [2021-11-19 13:42:57,593 INFO L185 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size 7 [2021-11-19 13:42:57,594 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-19 13:42:57,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,647 INFO L180 QuantifierPusher]: treesize reduction 14, result has 84.1 percent of original size [2021-11-19 13:42:57,652 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-19 13:42:57,664 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,665 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,668 INFO L185 QuantifierPusher]: treesize reduction 9, result has 76.9 percent of original size 30 [2021-11-19 13:42:57,668 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,670 INFO L180 QuantifierPusher]: treesize reduction 9, result has 80.9 percent of original size [2021-11-19 13:42:57,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 13:42:57,674 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,675 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,677 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-19 13:42:57,678 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-19 13:42:57,681 INFO L180 QuantifierPusher]: treesize reduction 14, result has 86.0 percent of original size [2021-11-19 13:42:57,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 13:42:57,689 INFO L180 QuantifierPusher]: treesize reduction 14, result has 84.1 percent of original size [2021-11-19 13:42:57,694 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,695 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,698 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-19 13:42:57,698 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,699 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 13:42:57,703 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,704 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,706 INFO L185 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size 27 [2021-11-19 13:42:57,708 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,711 INFO L185 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size 11 [2021-11-19 13:42:57,712 INFO L185 QuantifierPusher]: treesize reduction 4, result has 81.8 percent of original size 18 [2021-11-19 13:42:57,715 INFO L180 QuantifierPusher]: treesize reduction 14, result has 86.0 percent of original size [2021-11-19 13:42:57,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 13:42:57,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,769 INFO L180 QuantifierPusher]: treesize reduction 34, result has 74.2 percent of original size [2021-11-19 13:42:57,774 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,775 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,777 INFO L185 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size 39 [2021-11-19 13:42:57,778 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,780 INFO L180 QuantifierPusher]: treesize reduction 11, result has 80.7 percent of original size [2021-11-19 13:42:57,782 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 13:42:57,783 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,784 INFO L180 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 13:42:57,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:57,785 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,786 INFO L180 QuantifierPusher]: treesize reduction 7, result has 36.4 percent of original size [2021-11-19 13:42:57,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:57,788 INFO L185 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size 7 [2021-11-19 13:42:57,792 INFO L180 QuantifierPusher]: treesize reduction 34, result has 76.4 percent of original size [2021-11-19 13:42:57,795 INFO L185 QuantifierPusher]: treesize reduction 5, result has 94.9 percent of original size 93 [2021-11-19 13:42:57,802 INFO L180 QuantifierPusher]: treesize reduction 34, result has 74.2 percent of original size [2021-11-19 13:42:57,807 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,808 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,811 INFO L185 QuantifierPusher]: treesize reduction 11, result has 80.4 percent of original size 45 [2021-11-19 13:42:57,811 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,813 INFO L180 QuantifierPusher]: treesize reduction 11, result has 82.5 percent of original size [2021-11-19 13:42:57,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 13:42:57,817 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,817 INFO L180 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 13:42:57,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:57,819 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,819 INFO L180 QuantifierPusher]: treesize reduction 7, result has 36.4 percent of original size [2021-11-19 13:42:57,820 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:57,821 INFO L185 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size 7 [2021-11-19 13:42:57,825 INFO L180 QuantifierPusher]: treesize reduction 34, result has 76.4 percent of original size [2021-11-19 13:42:57,827 INFO L185 QuantifierPusher]: treesize reduction 5, result has 94.9 percent of original size 93 [2021-11-19 13:42:57,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:57,911 INFO L180 QuantifierPusher]: treesize reduction 30, result has 96.0 percent of original size [2021-11-19 13:42:57,914 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,919 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 255 [2021-11-19 13:42:57,945 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,962 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,972 INFO L185 QuantifierPusher]: treesize reduction 16, result has 92.6 percent of original size 201 [2021-11-19 13:42:57,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-19 13:42:57,983 INFO L180 QuantifierPusher]: treesize reduction 34, result has 74.2 percent of original size [2021-11-19 13:42:57,988 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,991 INFO L185 QuantifierPusher]: treesize reduction 11, result has 79.2 percent of original size 42 [2021-11-19 13:42:57,992 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,993 INFO L180 QuantifierPusher]: treesize reduction 11, result has 81.0 percent of original size [2021-11-19 13:42:57,995 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-19 13:42:57,996 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:57,997 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:57,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-19 13:42:57,999 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:58,000 INFO L180 QuantifierPusher]: treesize reduction 7, result has 36.4 percent of original size [2021-11-19 13:42:58,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:42:58,001 INFO L185 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size 7 [2021-11-19 13:42:58,004 INFO L180 QuantifierPusher]: treesize reduction 14, result has 84.1 percent of original size [2021-11-19 13:42:58,008 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:58,009 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:58,012 INFO L185 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size 33 [2021-11-19 13:42:58,013 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:58,014 INFO L180 QuantifierPusher]: treesize reduction 3, result has 93.2 percent of original size [2021-11-19 13:42:58,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 13:42:58,018 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:58,018 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:58,021 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 13:42:58,023 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:58,023 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:58,025 INFO L185 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size 11 [2021-11-19 13:42:58,026 INFO L185 QuantifierPusher]: treesize reduction 4, result has 81.8 percent of original size 18 [2021-11-19 13:42:58,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:58,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:58,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:58,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:58,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:58,034 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:42:58,035 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:58,036 INFO L185 QuantifierPusher]: treesize reduction 8, result has 27.3 percent of original size 3 [2021-11-19 13:42:58,037 INFO L185 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size 7 [2021-11-19 13:42:58,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:58,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:58,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:58,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:42:58,043 INFO L197 IcfgInterpreter]: Interpreting procedure fact with input of size 9 for LOIs [2021-11-19 13:42:58,046 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:43:00,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [481280051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:00,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:43:00,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [8, 8] total 34 [2021-11-19 13:43:00,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986852840] [2021-11-19 13:43:00,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:00,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-19 13:43:00,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:00,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-19 13:43:00,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 13:43:00,368 INFO L87 Difference]: Start difference. First operand 290 states and 377 transitions. Second operand has 23 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 13:43:01,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:01,212 INFO L93 Difference]: Finished difference Result 656 states and 911 transitions. [2021-11-19 13:43:01,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 13:43:01,216 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 49 [2021-11-19 13:43:01,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:01,221 INFO L225 Difference]: With dead ends: 656 [2021-11-19 13:43:01,221 INFO L226 Difference]: Without dead ends: 512 [2021-11-19 13:43:01,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 103 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=200, Invalid=1060, Unknown=0, NotChecked=0, Total=1260 [2021-11-19 13:43:01,228 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 124 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:01,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 288 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:43:01,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-11-19 13:43:01,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 435. [2021-11-19 13:43:01,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 329 states have (on average 1.2279635258358663) internal successors, (404), 333 states have internal predecessors, (404), 70 states have call successors, (70), 20 states have call predecessors, (70), 24 states have return successors, (95), 81 states have call predecessors, (95), 69 states have call successors, (95) [2021-11-19 13:43:01,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 569 transitions. [2021-11-19 13:43:01,271 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 569 transitions. Word has length 49 [2021-11-19 13:43:01,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:01,271 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 569 transitions. [2021-11-19 13:43:01,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 13:43:01,272 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 569 transitions. [2021-11-19 13:43:01,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-19 13:43:01,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:01,276 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:01,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:43:01,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:43:01,495 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:43:01,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:01,496 INFO L85 PathProgramCache]: Analyzing trace with hash 766601481, now seen corresponding path program 1 times [2021-11-19 13:43:01,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:01,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501945058] [2021-11-19 13:43:01,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:01,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:01,509 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:43:01,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612852205] [2021-11-19 13:43:01,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:01,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:43:01,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:43:01,511 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:43:01,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-19 13:43:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:01,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 13:43:01,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:01,780 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 13:43:01,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:02,550 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 13:43:02,554 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:02,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501945058] [2021-11-19 13:43:02,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:43:02,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612852205] [2021-11-19 13:43:02,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612852205] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:43:02,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1900488076] [2021-11-19 13:43:02,564 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2021-11-19 13:43:02,565 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:43:02,566 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-19 13:43:02,568 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:43:02,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-11-19 13:43:02,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228751427] [2021-11-19 13:43:02,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 13:43:02,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 13:43:02,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:02,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 13:43:02,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:43:02,573 INFO L87 Difference]: Start difference. First operand 435 states and 569 transitions. Second operand has 20 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-19 13:43:03,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:03,939 INFO L93 Difference]: Finished difference Result 890 states and 1158 transitions. [2021-11-19 13:43:03,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 13:43:03,940 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 53 [2021-11-19 13:43:03,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:03,945 INFO L225 Difference]: With dead ends: 890 [2021-11-19 13:43:03,946 INFO L226 Difference]: Without dead ends: 607 [2021-11-19 13:43:03,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2021-11-19 13:43:03,949 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 151 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:03,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 687 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 495 Invalid, 0 Unknown, 52 Unchecked, 0.5s Time] [2021-11-19 13:43:03,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-11-19 13:43:03,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 563. [2021-11-19 13:43:03,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 429 states have (on average 1.2284382284382285) internal successors, (527), 430 states have internal predecessors, (527), 86 states have call successors, (86), 29 states have call predecessors, (86), 36 states have return successors, (116), 103 states have call predecessors, (116), 85 states have call successors, (116) [2021-11-19 13:43:03,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 729 transitions. [2021-11-19 13:43:03,992 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 729 transitions. Word has length 53 [2021-11-19 13:43:03,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:03,993 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 729 transitions. [2021-11-19 13:43:03,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-19 13:43:03,993 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 729 transitions. [2021-11-19 13:43:03,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-19 13:43:03,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:03,995 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:04,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:43:04,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable271 [2021-11-19 13:43:04,210 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:43:04,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:04,210 INFO L85 PathProgramCache]: Analyzing trace with hash 237292048, now seen corresponding path program 1 times [2021-11-19 13:43:04,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:04,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350219845] [2021-11-19 13:43:04,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:04,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:04,220 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:43:04,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979288607] [2021-11-19 13:43:04,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:04,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:43:04,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:43:04,225 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:43:04,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-19 13:43:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:04,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:43:04,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-19 13:43:04,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:04,657 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-19 13:43:04,658 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:04,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350219845] [2021-11-19 13:43:04,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:43:04,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979288607] [2021-11-19 13:43:04,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979288607] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:43:04,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1022881534] [2021-11-19 13:43:04,661 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2021-11-19 13:43:04,661 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:43:04,662 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-19 13:43:04,663 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:43:04,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-11-19 13:43:04,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096811523] [2021-11-19 13:43:04,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 13:43:04,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:43:04,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:04,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:43:04,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:43:04,665 INFO L87 Difference]: Start difference. First operand 563 states and 729 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-19 13:43:05,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:05,110 INFO L93 Difference]: Finished difference Result 833 states and 1090 transitions. [2021-11-19 13:43:05,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 13:43:05,111 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 57 [2021-11-19 13:43:05,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:05,115 INFO L225 Difference]: With dead ends: 833 [2021-11-19 13:43:05,115 INFO L226 Difference]: Without dead ends: 443 [2021-11-19 13:43:05,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2021-11-19 13:43:05,119 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 70 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:05,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 333 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:05,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-11-19 13:43:05,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 404. [2021-11-19 13:43:05,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 310 states have (on average 1.2451612903225806) internal successors, (386), 313 states have internal predecessors, (386), 57 states have call successors, (57), 21 states have call predecessors, (57), 25 states have return successors, (78), 69 states have call predecessors, (78), 56 states have call successors, (78) [2021-11-19 13:43:05,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 521 transitions. [2021-11-19 13:43:05,150 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 521 transitions. Word has length 57 [2021-11-19 13:43:05,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:05,151 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 521 transitions. [2021-11-19 13:43:05,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-19 13:43:05,151 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 521 transitions. [2021-11-19 13:43:05,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-19 13:43:05,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:05,153 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:05,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:43:05,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:43:05,366 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:43:05,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:05,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1882118108, now seen corresponding path program 1 times [2021-11-19 13:43:05,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:05,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801353362] [2021-11-19 13:43:05,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:05,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:05,372 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:43:05,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689129016] [2021-11-19 13:43:05,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:05,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:43:05,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:43:05,378 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:43:05,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-19 13:43:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:05,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:43:05,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-19 13:43:05,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:05,735 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 13:43:05,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:05,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801353362] [2021-11-19 13:43:05,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:43:05,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689129016] [2021-11-19 13:43:05,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689129016] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:43:05,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:43:05,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 13:43:05,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269655247] [2021-11-19 13:43:05,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:05,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:43:05,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:05,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:43:05,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:05,738 INFO L87 Difference]: Start difference. First operand 404 states and 521 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-19 13:43:05,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:05,818 INFO L93 Difference]: Finished difference Result 657 states and 857 transitions. [2021-11-19 13:43:05,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:05,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 59 [2021-11-19 13:43:05,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:05,823 INFO L225 Difference]: With dead ends: 657 [2021-11-19 13:43:05,823 INFO L226 Difference]: Without dead ends: 321 [2021-11-19 13:43:05,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:05,826 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 26 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:05,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 103 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:43:05,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-11-19 13:43:05,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2021-11-19 13:43:05,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 247 states have (on average 1.2510121457489878) internal successors, (309), 251 states have internal predecessors, (309), 42 states have call successors, (42), 16 states have call predecessors, (42), 19 states have return successors, (59), 52 states have call predecessors, (59), 42 states have call successors, (59) [2021-11-19 13:43:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 410 transitions. [2021-11-19 13:43:05,848 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 410 transitions. Word has length 59 [2021-11-19 13:43:05,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:05,848 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 410 transitions. [2021-11-19 13:43:05,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-19 13:43:05,849 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 410 transitions. [2021-11-19 13:43:05,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-19 13:43:05,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:05,850 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:05,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:43:06,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:43:06,064 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:43:06,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:06,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1289943416, now seen corresponding path program 1 times [2021-11-19 13:43:06,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:06,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634177089] [2021-11-19 13:43:06,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:06,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:06,070 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:43:06,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1025091815] [2021-11-19 13:43:06,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:06,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:43:06,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:43:06,071 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:43:06,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-19 13:43:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:06,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:43:06,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 13:43:06,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-19 13:43:06,386 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:06,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634177089] [2021-11-19 13:43:06,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:43:06,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025091815] [2021-11-19 13:43:06,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025091815] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:43:06,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1033726563] [2021-11-19 13:43:06,390 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2021-11-19 13:43:06,390 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:43:06,391 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-19 13:43:06,392 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:43:06,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-11-19 13:43:06,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195519491] [2021-11-19 13:43:06,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 13:43:06,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:43:06,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:06,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:43:06,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:06,394 INFO L87 Difference]: Start difference. First operand 320 states and 410 transitions. Second operand has 11 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-19 13:43:06,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:06,648 INFO L93 Difference]: Finished difference Result 588 states and 767 transitions. [2021-11-19 13:43:06,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:43:06,650 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 59 [2021-11-19 13:43:06,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:06,653 INFO L225 Difference]: With dead ends: 588 [2021-11-19 13:43:06,653 INFO L226 Difference]: Without dead ends: 369 [2021-11-19 13:43:06,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:43:06,675 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 69 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:06,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 462 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:06,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-11-19 13:43:06,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 348. [2021-11-19 13:43:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 268 states have (on average 1.2649253731343284) internal successors, (339), 271 states have internal predecessors, (339), 46 states have call successors, (46), 19 states have call predecessors, (46), 22 states have return successors, (65), 57 states have call predecessors, (65), 46 states have call successors, (65) [2021-11-19 13:43:06,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 450 transitions. [2021-11-19 13:43:06,699 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 450 transitions. Word has length 59 [2021-11-19 13:43:06,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:06,700 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 450 transitions. [2021-11-19 13:43:06,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-19 13:43:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 450 transitions. [2021-11-19 13:43:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 13:43:06,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:06,701 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:06,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:43:06,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:43:06,926 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:43:06,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:06,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1015607558, now seen corresponding path program 1 times [2021-11-19 13:43:06,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:06,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085154771] [2021-11-19 13:43:06,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:06,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:06,933 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:43:06,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183214544] [2021-11-19 13:43:06,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:06,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:43:06,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:43:06,941 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:43:06,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-19 13:43:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:07,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:43:07,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:07,163 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-19 13:43:07,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:07,315 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-19 13:43:07,315 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:07,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085154771] [2021-11-19 13:43:07,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:43:07,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183214544] [2021-11-19 13:43:07,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183214544] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:43:07,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:43:07,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2021-11-19 13:43:07,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38420937] [2021-11-19 13:43:07,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:07,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:43:07,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:07,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:43:07,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:07,319 INFO L87 Difference]: Start difference. First operand 348 states and 450 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-19 13:43:07,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:07,452 INFO L93 Difference]: Finished difference Result 655 states and 858 transitions. [2021-11-19 13:43:07,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:07,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 69 [2021-11-19 13:43:07,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:07,456 INFO L225 Difference]: With dead ends: 655 [2021-11-19 13:43:07,456 INFO L226 Difference]: Without dead ends: 381 [2021-11-19 13:43:07,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:07,459 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 36 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:07,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 338 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:43:07,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-11-19 13:43:07,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 373. [2021-11-19 13:43:07,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 287 states have (on average 1.264808362369338) internal successors, (363), 289 states have internal predecessors, (363), 49 states have call successors, (49), 22 states have call predecessors, (49), 25 states have return successors, (70), 61 states have call predecessors, (70), 49 states have call successors, (70) [2021-11-19 13:43:07,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 482 transitions. [2021-11-19 13:43:07,483 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 482 transitions. Word has length 69 [2021-11-19 13:43:07,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:07,484 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 482 transitions. [2021-11-19 13:43:07,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-19 13:43:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 482 transitions. [2021-11-19 13:43:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-19 13:43:07,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:07,485 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:07,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:43:07,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:43:07,702 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:43:07,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:07,702 INFO L85 PathProgramCache]: Analyzing trace with hash -746301566, now seen corresponding path program 1 times [2021-11-19 13:43:07,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:07,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512190071] [2021-11-19 13:43:07,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:07,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:07,707 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:43:07,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [803434090] [2021-11-19 13:43:07,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:07,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:43:07,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:43:07,709 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:43:07,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-19 13:43:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:07,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 13:43:07,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:07,994 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-19 13:43:07,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:08,274 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-19 13:43:08,275 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:08,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512190071] [2021-11-19 13:43:08,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:43:08,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803434090] [2021-11-19 13:43:08,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803434090] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:08,275 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:08,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2021-11-19 13:43:08,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476494455] [2021-11-19 13:43:08,275 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:08,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:43:08,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:08,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:43:08,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:43:08,276 INFO L87 Difference]: Start difference. First operand 373 states and 482 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 14 states have internal predecessors, (59), 7 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-19 13:43:08,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:08,824 INFO L93 Difference]: Finished difference Result 667 states and 880 transitions. [2021-11-19 13:43:08,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 13:43:08,825 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 14 states have internal predecessors, (59), 7 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 74 [2021-11-19 13:43:08,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:08,829 INFO L225 Difference]: With dead ends: 667 [2021-11-19 13:43:08,829 INFO L226 Difference]: Without dead ends: 375 [2021-11-19 13:43:08,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-11-19 13:43:08,832 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 139 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:08,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 378 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:08,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-19 13:43:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 361. [2021-11-19 13:43:08,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 276 states have (on average 1.25) internal successors, (345), 282 states have internal predecessors, (345), 49 states have call successors, (49), 22 states have call predecessors, (49), 25 states have return successors, (61), 56 states have call predecessors, (61), 49 states have call successors, (61) [2021-11-19 13:43:08,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 455 transitions. [2021-11-19 13:43:08,856 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 455 transitions. Word has length 74 [2021-11-19 13:43:08,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:08,857 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 455 transitions. [2021-11-19 13:43:08,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 14 states have internal predecessors, (59), 7 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-19 13:43:08,857 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 455 transitions. [2021-11-19 13:43:08,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 13:43:08,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:08,859 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:08,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-19 13:43:09,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable276 [2021-11-19 13:43:09,074 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:43:09,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:09,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2052047517, now seen corresponding path program 2 times [2021-11-19 13:43:09,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:09,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690947007] [2021-11-19 13:43:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:09,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:09,082 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:43:09,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693024328] [2021-11-19 13:43:09,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:43:09,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:43:09,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:43:09,084 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:43:09,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-19 13:43:09,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 13:43:09,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:43:09,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:43:09,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:09,327 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-19 13:43:09,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-19 13:43:09,682 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:09,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690947007] [2021-11-19 13:43:09,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:43:09,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693024328] [2021-11-19 13:43:09,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693024328] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:09,682 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:09,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-11-19 13:43:09,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585572937] [2021-11-19 13:43:09,683 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:09,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:09,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:09,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:09,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:09,684 INFO L87 Difference]: Start difference. First operand 361 states and 455 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 13:43:10,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:10,122 INFO L93 Difference]: Finished difference Result 369 states and 464 transitions. [2021-11-19 13:43:10,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:10,125 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2021-11-19 13:43:10,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:10,128 INFO L225 Difference]: With dead ends: 369 [2021-11-19 13:43:10,128 INFO L226 Difference]: Without dead ends: 366 [2021-11-19 13:43:10,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:43:10,129 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 34 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:10,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 185 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 90 Invalid, 0 Unknown, 25 Unchecked, 0.3s Time] [2021-11-19 13:43:10,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-19 13:43:10,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 364. [2021-11-19 13:43:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 280 states have (on average 1.225) internal successors, (343), 284 states have internal predecessors, (343), 49 states have call successors, (49), 22 states have call predecessors, (49), 25 states have return successors, (61), 57 states have call predecessors, (61), 49 states have call successors, (61) [2021-11-19 13:43:10,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 453 transitions. [2021-11-19 13:43:10,151 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 453 transitions. Word has length 77 [2021-11-19 13:43:10,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:10,152 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 453 transitions. [2021-11-19 13:43:10,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 13:43:10,152 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 453 transitions. [2021-11-19 13:43:10,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-19 13:43:10,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:10,154 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:10,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-19 13:43:10,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable277 [2021-11-19 13:43:10,368 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:43:10,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:10,368 INFO L85 PathProgramCache]: Analyzing trace with hash 547534300, now seen corresponding path program 1 times [2021-11-19 13:43:10,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:10,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488248770] [2021-11-19 13:43:10,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:10,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:10,374 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:43:10,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525326502] [2021-11-19 13:43:10,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:10,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:43:10,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:43:10,376 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:43:10,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-19 13:43:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:10,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:43:10,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:10,997 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 13:43:10,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:44:58,100 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 43 proven. 0 refuted. 4 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:44:58,100 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:58,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488248770] [2021-11-19 13:44:58,101 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:44:58,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525326502] [2021-11-19 13:44:58,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525326502] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:44:58,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:44:58,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2021-11-19 13:44:58,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992736038] [2021-11-19 13:44:58,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:58,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:44:58,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:58,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:44:58,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=151, Unknown=15, NotChecked=0, Total=210 [2021-11-19 13:44:58,103 INFO L87 Difference]: Start difference. First operand 364 states and 453 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 13:44:58,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:58,218 INFO L93 Difference]: Finished difference Result 366 states and 455 transitions. [2021-11-19 13:44:58,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:44:58,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 83 [2021-11-19 13:44:58,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:58,223 INFO L225 Difference]: With dead ends: 366 [2021-11-19 13:44:58,223 INFO L226 Difference]: Without dead ends: 364 [2021-11-19 13:44:58,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 42.0s TimeCoverageRelationStatistics Valid=51, Invalid=174, Unknown=15, NotChecked=0, Total=240 [2021-11-19 13:44:58,224 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 16 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:58,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 187 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:44:58,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-11-19 13:44:58,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 354. [2021-11-19 13:44:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 272 states have (on average 1.1985294117647058) internal successors, (326), 276 states have internal predecessors, (326), 49 states have call successors, (49), 22 states have call predecessors, (49), 25 states have return successors, (61), 55 states have call predecessors, (61), 49 states have call successors, (61) [2021-11-19 13:44:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 436 transitions. [2021-11-19 13:44:58,248 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 436 transitions. Word has length 83 [2021-11-19 13:44:58,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:58,249 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 436 transitions. [2021-11-19 13:44:58,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 13:44:58,250 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 436 transitions. [2021-11-19 13:44:58,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-19 13:44:58,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:58,251 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:58,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-19 13:44:58,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable278 [2021-11-19 13:44:58,469 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-19 13:44:58,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:58,470 INFO L85 PathProgramCache]: Analyzing trace with hash -206305822, now seen corresponding path program 2 times [2021-11-19 13:44:58,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:58,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738538586] [2021-11-19 13:44:58,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:58,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:58,477 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:44:58,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197979071] [2021-11-19 13:44:58,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:44:58,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:44:58,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:44:58,479 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:44:58,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65df64ef-f2e8-4ae7-b7b9-c0a4665ab7d2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-19 13:44:58,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 13:44:58,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:44:58,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:44:58,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:44:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-19 13:44:58,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:50:04,889 WARN L227 SmtUtils]: Spent 5.86s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-19 13:53:05,290 WARN L227 SmtUtils]: Spent 25.98s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)