./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs --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 0455ba49274114922cfe1b7739d9cb0a89e6c868 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:42:37,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:42:37,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:42:37,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:42:37,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:42:37,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:42:37,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:42:37,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:42:37,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:42:37,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:42:37,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:42:37,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:42:37,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:42:37,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:42:37,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:42:37,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:42:37,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:42:37,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:42:37,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:42:37,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:42:37,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:42:37,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:42:37,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:42:37,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:42:37,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:42:37,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:42:37,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:42:37,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:42:37,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:42:37,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:42:37,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:42:37,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:42:37,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:42:37,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:42:37,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:42:37,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:42:37,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:42:37,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:42:37,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:42:37,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:42:37,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:42:37,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-16 02:42:37,305 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:42:37,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:42:37,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:42:37,308 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:42:37,308 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:42:37,309 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:42:37,309 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:42:37,309 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:42:37,310 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:42:37,310 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:42:37,319 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:42:37,319 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:42:37,320 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:42:37,320 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:42:37,320 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:42:37,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:42:37,322 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:42:37,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:42:37,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:42:37,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:42:37,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:42:37,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:42:37,323 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-16 02:42:37,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:42:37,324 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:42:37,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:42:37,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:42:37,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:42:37,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:42:37,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:42:37,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:42:37,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:42:37,329 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:42:37,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:42:37,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:42:37,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:42:37,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:42:37,330 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_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0455ba49274114922cfe1b7739d9cb0a89e6c868 [2021-10-16 02:42:37,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:42:37,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:42:37,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:42:37,814 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:42:37,815 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:42:37,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2021-10-16 02:42:37,912 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/data/5fc39db6b/f14fc80b29264f4d91ea8d9ea2d37e1c/FLAG51ebc5279 [2021-10-16 02:42:38,451 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:42:38,452 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2021-10-16 02:42:38,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/data/5fc39db6b/f14fc80b29264f4d91ea8d9ea2d37e1c/FLAG51ebc5279 [2021-10-16 02:42:38,829 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/data/5fc39db6b/f14fc80b29264f4d91ea8d9ea2d37e1c [2021-10-16 02:42:38,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:42:38,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:42:38,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:42:38,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:42:38,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:42:38,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:42:38" (1/1) ... [2021-10-16 02:42:38,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0913e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:42:38, skipping insertion in model container [2021-10-16 02:42:38,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:42:38" (1/1) ... [2021-10-16 02:42:38,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:42:38,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:42:39,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:42:39,085 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:42:39,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:42:39,115 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:42:39,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:42:39 WrapperNode [2021-10-16 02:42:39,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:42:39,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:42:39,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:42:39,118 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:42:39,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:42:39" (1/1) ... [2021-10-16 02:42:39,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:42:39" (1/1) ... [2021-10-16 02:42:39,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:42:39,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:42:39,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:42:39,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:42:39,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:42:39" (1/1) ... [2021-10-16 02:42:39,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:42:39" (1/1) ... [2021-10-16 02:42:39,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:42:39" (1/1) ... [2021-10-16 02:42:39,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:42:39" (1/1) ... [2021-10-16 02:42:39,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:42:39" (1/1) ... [2021-10-16 02:42:39,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:42:39" (1/1) ... [2021-10-16 02:42:39,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:42:39" (1/1) ... [2021-10-16 02:42:39,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:42:39,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:42:39,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:42:39,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:42:39,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:42:39" (1/1) ... [2021-10-16 02:42:39,196 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:42:39,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:42:39,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:42:39,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:42:39,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:42:39,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:42:39,481 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:42:39,481 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-16 02:42:39,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:42:39 BoogieIcfgContainer [2021-10-16 02:42:39,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:42:39,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:42:39,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:42:39,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:42:39,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:42:38" (1/3) ... [2021-10-16 02:42:39,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b7d32d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:42:39, skipping insertion in model container [2021-10-16 02:42:39,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:42:39" (2/3) ... [2021-10-16 02:42:39,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b7d32d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:42:39, skipping insertion in model container [2021-10-16 02:42:39,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:42:39" (3/3) ... [2021-10-16 02:42:39,497 INFO L111 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2021-10-16 02:42:39,504 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:42:39,505 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-16 02:42:39,568 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:42:39,577 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:42:39,577 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-16 02:42:39,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:39,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:42:39,602 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:42:39,603 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:42:39,603 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:42:39,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:42:39,611 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-10-16 02:42:39,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:42:39,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987131328] [2021-10-16 02:42:39,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:42:39,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:42:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:39,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:39,786 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:42:39,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987131328] [2021-10-16 02:42:39,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987131328] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:42:39,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:42:39,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:42:39,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554988828] [2021-10-16 02:42:39,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:42:39,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:42:39,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:42:39,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:42:39,830 INFO L87 Difference]: Start difference. First operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:39,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:42:39,909 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2021-10-16 02:42:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:42:39,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-16 02:42:39,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:42:39,922 INFO L225 Difference]: With dead ends: 40 [2021-10-16 02:42:39,936 INFO L226 Difference]: Without dead ends: 23 [2021-10-16 02:42:39,939 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:42:39,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-16 02:42:40,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-10-16 02:42:40,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-16 02:42:40,023 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2021-10-16 02:42:40,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:42:40,024 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-16 02:42:40,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:40,025 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-16 02:42:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:42:40,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:42:40,025 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:42:40,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:42:40,026 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:42:40,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:42:40,027 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2021-10-16 02:42:40,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:42:40,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939093114] [2021-10-16 02:42:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:42:40,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:42:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:40,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:40,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:42:40,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939093114] [2021-10-16 02:42:40,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939093114] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:42:40,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:42:40,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:42:40,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383204914] [2021-10-16 02:42:40,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:42:40,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:42:40,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:42:40,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:42:40,081 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:40,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:42:40,126 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-10-16 02:42:40,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:42:40,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-16 02:42:40,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:42:40,139 INFO L225 Difference]: With dead ends: 21 [2021-10-16 02:42:40,139 INFO L226 Difference]: Without dead ends: 20 [2021-10-16 02:42:40,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:42:40,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-16 02:42:40,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-16 02:42:40,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:40,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-10-16 02:42:40,146 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 4 [2021-10-16 02:42:40,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:42:40,146 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-16 02:42:40,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:40,147 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-10-16 02:42:40,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:42:40,147 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:42:40,147 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:42:40,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:42:40,148 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:42:40,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:42:40,149 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2021-10-16 02:42:40,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:42:40,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384505794] [2021-10-16 02:42:40,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:42:40,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:42:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:40,203 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:42:40,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384505794] [2021-10-16 02:42:40,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384505794] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:42:40,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:42:40,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:42:40,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871044487] [2021-10-16 02:42:40,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:42:40,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:42:40,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:42:40,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:42:40,207 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:40,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:42:40,229 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-10-16 02:42:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:42:40,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 02:42:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:42:40,231 INFO L225 Difference]: With dead ends: 25 [2021-10-16 02:42:40,231 INFO L226 Difference]: Without dead ends: 23 [2021-10-16 02:42:40,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:42:40,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-16 02:42:40,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2021-10-16 02:42:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-16 02:42:40,237 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2021-10-16 02:42:40,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:42:40,237 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-16 02:42:40,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:40,238 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-16 02:42:40,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:42:40,238 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:42:40,238 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:42:40,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:42:40,239 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:42:40,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:42:40,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1365891962, now seen corresponding path program 1 times [2021-10-16 02:42:40,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:42:40,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551478084] [2021-10-16 02:42:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:42:40,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:42:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:40,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:42:40,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551478084] [2021-10-16 02:42:40,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551478084] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:42:40,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:42:40,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:42:40,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027720918] [2021-10-16 02:42:40,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:42:40,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:42:40,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:42:40,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:42:40,278 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:40,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:42:40,289 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-10-16 02:42:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:42:40,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 02:42:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:42:40,290 INFO L225 Difference]: With dead ends: 18 [2021-10-16 02:42:40,290 INFO L226 Difference]: Without dead ends: 17 [2021-10-16 02:42:40,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:42:40,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-16 02:42:40,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-16 02:42:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:40,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-16 02:42:40,295 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2021-10-16 02:42:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:42:40,296 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-16 02:42:40,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:40,296 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-16 02:42:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:42:40,297 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:42:40,297 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:42:40,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:42:40,298 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:42:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:42:40,299 INFO L82 PathProgramCache]: Analyzing trace with hash -767237628, now seen corresponding path program 1 times [2021-10-16 02:42:40,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:42:40,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745071240] [2021-10-16 02:42:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:42:40,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:42:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:40,345 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:42:40,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745071240] [2021-10-16 02:42:40,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745071240] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:42:40,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286859150] [2021-10-16 02:42:40,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:42:40,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:42:40,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:42:40,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:42:40,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:42:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:40,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:42:40,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:42:40,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:40,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:42:40,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:40,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286859150] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:42:40,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [472518586] [2021-10-16 02:42:40,749 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-16 02:42:40,749 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:42:40,754 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:42:40,759 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:42:40,760 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:42:40,831 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:42:40,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:42:40,859 INFO L180 QuantifierPusher]: treesize reduction 10, result has 56.5 percent of original size [2021-10-16 02:42:40,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:42:40,872 INFO L180 QuantifierPusher]: treesize reduction 16, result has 44.8 percent of original size [2021-10-16 02:42:40,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:42:40,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:40,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:40,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:40,966 INFO L180 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-10-16 02:42:40,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-16 02:42:40,978 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-16 02:42:40,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:42:40,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,030 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:42:41,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:41,037 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-16 02:42:41,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:42:41,045 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:42:41,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:41,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:41,229 INFO L180 QuantifierPusher]: treesize reduction 9, result has 85.0 percent of original size [2021-10-16 02:42:41,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-16 02:42:41,242 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-16 02:42:41,618 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:42:41,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-16 02:42:41,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2021-10-16 02:42:41,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407128283] [2021-10-16 02:42:41,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:42:41,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:42:41,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:42:41,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:42:41,621 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:41,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:42:41,788 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2021-10-16 02:42:41,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:42:41,789 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-16 02:42:41,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:42:41,794 INFO L225 Difference]: With dead ends: 43 [2021-10-16 02:42:41,795 INFO L226 Difference]: Without dead ends: 32 [2021-10-16 02:42:41,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 472.1ms TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-10-16 02:42:41,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-16 02:42:41,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2021-10-16 02:42:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:41,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-10-16 02:42:41,815 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2021-10-16 02:42:41,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:42:41,815 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-16 02:42:41,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:41,817 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-16 02:42:41,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:42:41,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:42:41,819 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1] [2021-10-16 02:42:41,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:42:42,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:42:42,053 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:42:42,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:42:42,054 INFO L82 PathProgramCache]: Analyzing trace with hash -907820867, now seen corresponding path program 1 times [2021-10-16 02:42:42,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:42:42,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660399809] [2021-10-16 02:42:42,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:42:42,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:42:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:42,111 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:42:42,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660399809] [2021-10-16 02:42:42,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660399809] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:42:42,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137348887] [2021-10-16 02:42:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:42:42,112 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:42:42,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:42:42,114 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:42:42,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 02:42:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:42,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:42:42,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:42:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:42,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:42:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:42,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137348887] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:42:42,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [180984508] [2021-10-16 02:42:42,363 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-16 02:42:42,363 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:42:42,363 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:42:42,364 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:42:42,364 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:42:42,387 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:42:42,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:42:42,399 INFO L180 QuantifierPusher]: treesize reduction 10, result has 56.5 percent of original size [2021-10-16 02:42:42,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:42,410 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:42:42,417 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:42,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,446 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-10-16 02:42:42,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-16 02:42:42,458 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-16 02:42:42,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:42:42,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,488 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:42:42,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:42,493 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-16 02:42:42,498 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:42:42,525 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:42:42,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:42,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:42,609 INFO L180 QuantifierPusher]: treesize reduction 9, result has 85.0 percent of original size [2021-10-16 02:42:42,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-16 02:42:42,618 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-16 02:42:42,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:42:42,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-16 02:42:42,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-10-16 02:42:42,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256326459] [2021-10-16 02:42:42,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:42:42,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:42:42,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:42:42,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:42:42,938 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:43,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:42:43,029 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2021-10-16 02:42:43,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:42:43,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-16 02:42:43,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:42:43,034 INFO L225 Difference]: With dead ends: 76 [2021-10-16 02:42:43,034 INFO L226 Difference]: Without dead ends: 75 [2021-10-16 02:42:43,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 349.1ms TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:42:43,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-16 02:42:43,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2021-10-16 02:42:43,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 64 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2021-10-16 02:42:43,055 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 16 [2021-10-16 02:42:43,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:42:43,055 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2021-10-16 02:42:43,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:43,056 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2021-10-16 02:42:43,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:42:43,057 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:42:43,057 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-16 02:42:43,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:42:43,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:42:43,280 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:42:43,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:42:43,281 INFO L82 PathProgramCache]: Analyzing trace with hash -537305888, now seen corresponding path program 1 times [2021-10-16 02:42:43,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:42:43,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248527678] [2021-10-16 02:42:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:42:43,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:42:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:42:43,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:42:43,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248527678] [2021-10-16 02:42:43,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248527678] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:42:43,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685275571] [2021-10-16 02:42:43,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:42:43,319 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:42:43,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:42:43,321 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:42:43,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 02:42:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:43,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:42:43,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:42:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:43,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:42:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:43,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685275571] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:42:43,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [754990348] [2021-10-16 02:42:43,574 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 02:42:43,575 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:42:43,575 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:42:43,575 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:42:43,575 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:42:43,599 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-16 02:42:43,599 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:42:43,602 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:42:43,604 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:43,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,613 INFO L180 QuantifierPusher]: treesize reduction 20, result has 39.4 percent of original size [2021-10-16 02:42:43,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:42:43,619 INFO L180 QuantifierPusher]: treesize reduction 16, result has 44.8 percent of original size [2021-10-16 02:42:43,621 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:43,628 INFO L180 QuantifierPusher]: treesize reduction 29, result has 3.3 percent of original size [2021-10-16 02:42:43,628 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:42:43,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,687 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-16 02:42:43,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-16 02:42:43,693 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-16 02:42:43,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:42:43,699 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-16 02:42:43,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-16 02:42:43,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,739 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:42:43,741 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:43,744 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-16 02:42:43,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:42:43,748 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-16 02:42:43,750 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-16 02:42:43,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,770 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:42:43,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:42:43,774 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-16 02:42:43,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:42:43,779 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-16 02:42:43,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:42:43,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,793 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:42:43,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:42:43,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:42:43,828 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-16 02:42:43,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,862 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-16 02:42:43,870 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:42:43,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:43,918 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-16 02:42:44,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:42:44,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-16 02:42:44,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2021-10-16 02:42:44,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726370674] [2021-10-16 02:42:44,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:42:44,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:42:44,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:42:44,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-10-16 02:42:44,204 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:44,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:42:44,295 INFO L93 Difference]: Finished difference Result 155 states and 196 transitions. [2021-10-16 02:42:44,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 02:42:44,296 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 02:42:44,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:42:44,298 INFO L225 Difference]: With dead ends: 155 [2021-10-16 02:42:44,299 INFO L226 Difference]: Without dead ends: 102 [2021-10-16 02:42:44,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 315.6ms TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-10-16 02:42:44,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-16 02:42:44,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-10-16 02:42:44,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.15) internal successors, (115), 101 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:44,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2021-10-16 02:42:44,319 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 18 [2021-10-16 02:42:44,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:42:44,319 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2021-10-16 02:42:44,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:44,320 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2021-10-16 02:42:44,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-16 02:42:44,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:42:44,322 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1] [2021-10-16 02:42:44,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:42:44,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-10-16 02:42:44,533 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:42:44,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:42:44,534 INFO L82 PathProgramCache]: Analyzing trace with hash 855337761, now seen corresponding path program 2 times [2021-10-16 02:42:44,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:42:44,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659808701] [2021-10-16 02:42:44,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:42:44,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:42:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:44,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:42:44,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659808701] [2021-10-16 02:42:44,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659808701] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:42:44,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511358616] [2021-10-16 02:42:44,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:42:44,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:42:44,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:42:44,649 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:42:44,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-16 02:42:44,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-16 02:42:44,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:42:44,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:42:44,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:42:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:44,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:42:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:45,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511358616] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:42:45,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [726552159] [2021-10-16 02:42:45,087 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-16 02:42:45,087 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:42:45,088 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:42:45,088 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:42:45,088 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:42:45,096 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:42:45,099 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:45,101 INFO L180 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-10-16 02:42:45,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:42:45,107 INFO L180 QuantifierPusher]: treesize reduction 16, result has 44.8 percent of original size [2021-10-16 02:42:45,109 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:45,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,121 INFO L180 QuantifierPusher]: treesize reduction 11, result has 71.8 percent of original size [2021-10-16 02:42:45,123 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-16 02:42:45,128 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-16 02:42:45,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:42:45,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,155 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:42:45,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:45,159 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-16 02:42:45,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:42:45,164 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:42:45,167 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:45,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:45,226 INFO L180 QuantifierPusher]: treesize reduction 9, result has 85.0 percent of original size [2021-10-16 02:42:45,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-16 02:42:45,233 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-16 02:42:45,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:42:45,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-16 02:42:45,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2021-10-16 02:42:45,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358793019] [2021-10-16 02:42:45,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-16 02:42:45,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:42:45,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-16 02:42:45,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-10-16 02:42:45,557 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:45,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:42:45,746 INFO L93 Difference]: Finished difference Result 551 states and 644 transitions. [2021-10-16 02:42:45,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-16 02:42:45,749 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 0 states have call successors, (0), 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 40 [2021-10-16 02:42:45,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:42:45,754 INFO L225 Difference]: With dead ends: 551 [2021-10-16 02:42:45,755 INFO L226 Difference]: Without dead ends: 550 [2021-10-16 02:42:45,756 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 98 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 427.8ms TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-10-16 02:42:45,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-10-16 02:42:45,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 363. [2021-10-16 02:42:45,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 361 states have (on average 1.1662049861495845) internal successors, (421), 362 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 421 transitions. [2021-10-16 02:42:45,843 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 421 transitions. Word has length 40 [2021-10-16 02:42:45,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:42:45,844 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 421 transitions. [2021-10-16 02:42:45,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:45,845 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 421 transitions. [2021-10-16 02:42:45,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-16 02:42:45,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:42:45,849 INFO L512 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 5, 5, 4, 4, 4, 1, 1] [2021-10-16 02:42:45,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:42:46,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2021-10-16 02:42:46,065 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:42:46,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:42:46,065 INFO L82 PathProgramCache]: Analyzing trace with hash 769890654, now seen corresponding path program 2 times [2021-10-16 02:42:46,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:42:46,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611235666] [2021-10-16 02:42:46,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:42:46,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:42:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 76 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-16 02:42:46,167 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:42:46,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611235666] [2021-10-16 02:42:46,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611235666] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:42:46,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572306209] [2021-10-16 02:42:46,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:42:46,168 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:42:46,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:42:46,169 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:42:46,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 02:42:46,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-16 02:42:46,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:42:46,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:42:46,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:42:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 76 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-16 02:42:46,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:42:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 76 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-16 02:42:46,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572306209] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:42:46,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1354434453] [2021-10-16 02:42:46,692 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 02:42:46,693 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:42:46,693 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:42:46,693 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:42:46,694 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:42:46,705 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-16 02:42:46,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:42:46,708 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:42:46,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:46,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,718 INFO L180 QuantifierPusher]: treesize reduction 20, result has 39.4 percent of original size [2021-10-16 02:42:46,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:46,725 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:42:46,728 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:42:46,733 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-16 02:42:46,734 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:42:46,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,783 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-16 02:42:46,792 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-16 02:42:46,797 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-16 02:42:46,800 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:42:46,804 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-16 02:42:46,807 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-16 02:42:46,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,837 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:42:46,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:46,846 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-16 02:42:46,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:42:46,851 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-16 02:42:46,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-16 02:42:46,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,883 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:42:46,885 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:42:46,889 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-16 02:42:46,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:42:46,900 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-16 02:42:46,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:42:46,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,915 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:42:46,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:42:46,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,949 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:42:46,953 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-16 02:42:46,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,984 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-16 02:42:46,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:42:46,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:46,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:47,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:47,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:47,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:47,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:47,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:47,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:47,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:47,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:47,021 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-16 02:42:47,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:42:47,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-16 02:42:47,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-10-16 02:42:47,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186333530] [2021-10-16 02:42:47,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:42:47,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:42:47,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:42:47,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-10-16 02:42:47,312 INFO L87 Difference]: Start difference. First operand 363 states and 421 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:47,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:42:47,394 INFO L93 Difference]: Finished difference Result 585 states and 680 transitions. [2021-10-16 02:42:47,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 02:42:47,395 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 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 54 [2021-10-16 02:42:47,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:42:47,397 INFO L225 Difference]: With dead ends: 585 [2021-10-16 02:42:47,398 INFO L226 Difference]: Without dead ends: 243 [2021-10-16 02:42:47,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 357.0ms TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-10-16 02:42:47,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-10-16 02:42:47,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-10-16 02:42:47,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 241 states have (on average 1.1369294605809128) internal successors, (274), 242 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:47,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 274 transitions. [2021-10-16 02:42:47,426 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 274 transitions. Word has length 54 [2021-10-16 02:42:47,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:42:47,429 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 274 transitions. [2021-10-16 02:42:47,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:47,429 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 274 transitions. [2021-10-16 02:42:47,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-16 02:42:47,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:42:47,443 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1] [2021-10-16 02:42:47,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:42:47,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2021-10-16 02:42:47,653 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:42:47,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:42:47,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1372652567, now seen corresponding path program 3 times [2021-10-16 02:42:47,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:42:47,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125772606] [2021-10-16 02:42:47,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:42:47,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:42:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:47,918 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:42:47,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125772606] [2021-10-16 02:42:47,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125772606] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:42:47,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721779535] [2021-10-16 02:42:47,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 02:42:47,919 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:42:47,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:42:47,921 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:42:47,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 02:42:48,081 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 02:42:48,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:42:48,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-16 02:42:48,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:42:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:48,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:42:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:49,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721779535] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:42:49,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1614463846] [2021-10-16 02:42:49,154 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-16 02:42:49,154 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:42:49,155 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:42:49,155 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:42:49,155 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:42:49,165 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:42:49,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:49,170 INFO L180 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-10-16 02:42:49,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:42:49,174 INFO L180 QuantifierPusher]: treesize reduction 16, result has 44.8 percent of original size [2021-10-16 02:42:49,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:49,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,195 INFO L180 QuantifierPusher]: treesize reduction 11, result has 71.8 percent of original size [2021-10-16 02:42:49,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-16 02:42:49,202 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-16 02:42:49,205 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:42:49,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,221 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:42:49,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:49,224 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-16 02:42:49,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:42:49,229 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:42:49,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:49,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:49,305 INFO L180 QuantifierPusher]: treesize reduction 9, result has 85.0 percent of original size [2021-10-16 02:42:49,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-16 02:42:49,309 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-16 02:42:49,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:42:49,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-16 02:42:49,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2021-10-16 02:42:49,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849579067] [2021-10-16 02:42:49,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-16 02:42:49,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:42:49,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-16 02:42:49,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=890, Unknown=0, NotChecked=0, Total=1406 [2021-10-16 02:42:49,872 INFO L87 Difference]: Start difference. First operand 243 states and 274 transitions. Second operand has 32 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:50,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:42:50,276 INFO L93 Difference]: Finished difference Result 2182 states and 2553 transitions. [2021-10-16 02:42:50,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-16 02:42:50,277 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 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 88 [2021-10-16 02:42:50,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:42:50,292 INFO L225 Difference]: With dead ends: 2182 [2021-10-16 02:42:50,292 INFO L226 Difference]: Without dead ends: 2181 [2021-10-16 02:42:50,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 226 SyntacticMatches, 15 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 1036.1ms TimeCoverageRelationStatistics Valid=516, Invalid=890, Unknown=0, NotChecked=0, Total=1406 [2021-10-16 02:42:50,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2021-10-16 02:42:50,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 927. [2021-10-16 02:42:50,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 925 states have (on average 1.1686486486486487) internal successors, (1081), 926 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1081 transitions. [2021-10-16 02:42:50,374 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1081 transitions. Word has length 88 [2021-10-16 02:42:50,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:42:50,375 INFO L470 AbstractCegarLoop]: Abstraction has 927 states and 1081 transitions. [2021-10-16 02:42:50,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:50,376 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1081 transitions. [2021-10-16 02:42:50,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-16 02:42:50,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:42:50,378 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 10, 10, 10, 5, 5, 5, 1, 1] [2021-10-16 02:42:50,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:42:50,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2021-10-16 02:42:50,593 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:42:50,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:42:50,593 INFO L82 PathProgramCache]: Analyzing trace with hash 421978100, now seen corresponding path program 3 times [2021-10-16 02:42:50,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:42:50,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434212534] [2021-10-16 02:42:50,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:42:50,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:42:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:50,759 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 178 proven. 290 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-16 02:42:50,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:42:50,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434212534] [2021-10-16 02:42:50,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434212534] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:42:50,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334173553] [2021-10-16 02:42:50,760 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 02:42:50,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:42:50,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:42:50,762 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:42:50,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-16 02:42:50,991 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 02:42:50,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:42:50,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:42:51,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:42:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 178 proven. 290 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-16 02:42:51,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:42:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 178 proven. 290 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-16 02:42:51,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334173553] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:42:51,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2062834378] [2021-10-16 02:42:51,865 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 02:42:51,865 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:42:51,865 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:42:51,865 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:42:51,865 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:42:51,872 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-16 02:42:51,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:42:51,875 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:42:51,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:51,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,883 INFO L180 QuantifierPusher]: treesize reduction 20, result has 39.4 percent of original size [2021-10-16 02:42:51,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:51,887 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:42:51,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:42:51,890 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-16 02:42:51,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:42:51,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,908 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-16 02:42:51,910 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-16 02:42:51,914 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-16 02:42:51,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:42:51,918 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-16 02:42:51,920 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-16 02:42:51,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,942 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:42:51,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:51,946 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-16 02:42:51,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:42:51,950 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-16 02:42:51,951 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-16 02:42:51,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,968 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:42:51,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:42:51,971 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-16 02:42:51,973 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:42:51,974 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-16 02:42:51,976 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:42:51,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,987 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:42:51,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:42:51,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:51,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,012 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:42:52,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-16 02:42:52,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,035 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-16 02:42:52,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:42:52,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:52,060 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-16 02:42:52,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:42:52,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-16 02:42:52,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-10-16 02:42:52,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870066043] [2021-10-16 02:42:52,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-16 02:42:52,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:42:52,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-16 02:42:52,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=738, Unknown=0, NotChecked=0, Total=1056 [2021-10-16 02:42:52,377 INFO L87 Difference]: Start difference. First operand 927 states and 1081 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:52,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:42:52,531 INFO L93 Difference]: Finished difference Result 1449 states and 1694 transitions. [2021-10-16 02:42:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-16 02:42:52,532 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-16 02:42:52,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:42:52,537 INFO L225 Difference]: With dead ends: 1449 [2021-10-16 02:42:52,538 INFO L226 Difference]: Without dead ends: 579 [2021-10-16 02:42:52,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 576.7ms TimeCoverageRelationStatistics Valid=318, Invalid=738, Unknown=0, NotChecked=0, Total=1056 [2021-10-16 02:42:52,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-10-16 02:42:52,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2021-10-16 02:42:52,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 577 states have (on average 1.1403812824956672) internal successors, (658), 578 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 658 transitions. [2021-10-16 02:42:52,574 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 658 transitions. Word has length 90 [2021-10-16 02:42:52,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:42:52,575 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 658 transitions. [2021-10-16 02:42:52,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:52,575 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 658 transitions. [2021-10-16 02:42:52,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-10-16 02:42:52,578 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:42:52,578 INFO L512 BasicCegarLoop]: trace histogram [27, 26, 26, 22, 22, 22, 5, 5, 5, 1, 1] [2021-10-16 02:42:52,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:42:52,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:42:52,793 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:42:52,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:42:52,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1988381664, now seen corresponding path program 4 times [2021-10-16 02:42:52,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:42:52,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151727466] [2021-10-16 02:42:52,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:42:52,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:42:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:53,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 382 proven. 1430 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-16 02:42:53,256 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:42:53,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151727466] [2021-10-16 02:42:53,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151727466] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:42:53,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528518824] [2021-10-16 02:42:53,256 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-16 02:42:53,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:42:53,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:42:53,259 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:42:53,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-16 02:42:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:53,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-16 02:42:53,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:42:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 382 proven. 1430 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-16 02:42:54,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:42:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 382 proven. 1430 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-16 02:42:55,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528518824] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:42:55,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1053539016] [2021-10-16 02:42:55,385 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 02:42:55,386 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:42:55,386 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:42:55,386 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:42:55,386 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:42:55,393 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-16 02:42:55,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:42:55,396 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:42:55,397 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:55,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,403 INFO L180 QuantifierPusher]: treesize reduction 20, result has 39.4 percent of original size [2021-10-16 02:42:55,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:55,407 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:42:55,408 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:55,409 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-16 02:42:55,410 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:42:55,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,425 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-16 02:42:55,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-16 02:42:55,429 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-16 02:42:55,431 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:42:55,433 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-16 02:42:55,435 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-16 02:42:55,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,454 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:42:55,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:42:55,457 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-16 02:42:55,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:42:55,460 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-16 02:42:55,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-16 02:42:55,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,477 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:42:55,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:42:55,480 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-16 02:42:55,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:42:55,483 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-16 02:42:55,484 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:42:55,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,493 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:42:55,495 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:42:55,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,518 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:42:55,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-16 02:42:55,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,539 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-16 02:42:55,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:42:55,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:42:55,587 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-16 02:42:55,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:42:55,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-16 02:42:55,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-10-16 02:42:55,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218735526] [2021-10-16 02:42:55,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-16 02:42:55,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:42:55,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-16 02:42:55,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1170, Invalid=2022, Unknown=0, NotChecked=0, Total=3192 [2021-10-16 02:42:55,972 INFO L87 Difference]: Start difference. First operand 579 states and 658 transitions. Second operand has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 47 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:56,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:42:56,251 INFO L93 Difference]: Finished difference Result 773 states and 881 transitions. [2021-10-16 02:42:56,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-16 02:42:56,252 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 47 states have internal predecessors, (277), 0 states have call successors, (0), 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 162 [2021-10-16 02:42:56,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:42:56,255 INFO L225 Difference]: With dead ends: 773 [2021-10-16 02:42:56,256 INFO L226 Difference]: Without dead ends: 323 [2021-10-16 02:42:56,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 1355.3ms TimeCoverageRelationStatistics Valid=1170, Invalid=2022, Unknown=0, NotChecked=0, Total=3192 [2021-10-16 02:42:56,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-16 02:42:56,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 308. [2021-10-16 02:42:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 306 states have (on average 1.0718954248366013) internal successors, (328), 307 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:56,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 328 transitions. [2021-10-16 02:42:56,273 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 328 transitions. Word has length 162 [2021-10-16 02:42:56,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:42:56,274 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 328 transitions. [2021-10-16 02:42:56,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 47 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:56,274 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 328 transitions. [2021-10-16 02:42:56,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-10-16 02:42:56,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:42:56,277 INFO L512 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1] [2021-10-16 02:42:56,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:42:56,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable315 [2021-10-16 02:42:56,502 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:42:56,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:42:56,502 INFO L82 PathProgramCache]: Analyzing trace with hash 219614585, now seen corresponding path program 4 times [2021-10-16 02:42:56,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:42:56,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585720771] [2021-10-16 02:42:56,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:42:56,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:42:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:57,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:57,202 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:42:57,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585720771] [2021-10-16 02:42:57,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585720771] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:42:57,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592614826] [2021-10-16 02:42:57,202 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-16 02:42:57,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:42:57,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:42:57,204 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:42:57,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-16 02:42:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:57,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-16 02:42:57,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:42:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:42:58,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:00,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:00,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592614826] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:43:00,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [419096409] [2021-10-16 02:43:00,149 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-16 02:43:00,149 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:43:00,149 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:43:00,150 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:43:00,150 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:43:00,168 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:43:00,169 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:43:00,171 INFO L180 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-10-16 02:43:00,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:43:00,173 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:43:00,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:43:00,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,183 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-10-16 02:43:00,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-16 02:43:00,186 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-16 02:43:00,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:43:00,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,201 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:43:00,202 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:43:00,203 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-16 02:43:00,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:43:00,208 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:43:00,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:43:00,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:00,255 INFO L180 QuantifierPusher]: treesize reduction 9, result has 85.0 percent of original size [2021-10-16 02:43:00,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-16 02:43:00,258 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-16 02:43:01,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:43:01,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-16 02:43:01,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 62 [2021-10-16 02:43:01,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888927588] [2021-10-16 02:43:01,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-16 02:43:01,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:43:01,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-16 02:43:01,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2036, Invalid=2794, Unknown=0, NotChecked=0, Total=4830 [2021-10-16 02:43:01,282 INFO L87 Difference]: Start difference. First operand 308 states and 328 transitions. Second operand has 64 states, 63 states have (on average 5.841269841269841) internal successors, (368), 63 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:01,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:01,835 INFO L93 Difference]: Finished difference Result 1286 states and 1480 transitions. [2021-10-16 02:43:01,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-16 02:43:01,835 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 5.841269841269841) internal successors, (368), 63 states have internal predecessors, (368), 0 states have call successors, (0), 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 184 [2021-10-16 02:43:01,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:01,843 INFO L225 Difference]: With dead ends: 1286 [2021-10-16 02:43:01,843 INFO L226 Difference]: Without dead ends: 1285 [2021-10-16 02:43:01,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 482 SyntacticMatches, 31 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3464 ImplicationChecksByTransitivity, 2813.2ms TimeCoverageRelationStatistics Valid=2036, Invalid=2794, Unknown=0, NotChecked=0, Total=4830 [2021-10-16 02:43:01,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2021-10-16 02:43:01,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1251. [2021-10-16 02:43:01,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1249 states have (on average 1.1417133706965572) internal successors, (1426), 1250 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:01,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1426 transitions. [2021-10-16 02:43:01,899 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1426 transitions. Word has length 184 [2021-10-16 02:43:01,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:01,900 INFO L470 AbstractCegarLoop]: Abstraction has 1251 states and 1426 transitions. [2021-10-16 02:43:01,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 5.841269841269841) internal successors, (368), 63 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:01,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1426 transitions. [2021-10-16 02:43:01,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-10-16 02:43:01,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:01,906 INFO L512 BasicCegarLoop]: trace histogram [51, 50, 50, 46, 46, 46, 5, 5, 5, 1, 1] [2021-10-16 02:43:01,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:02,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:43:02,133 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:43:02,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:02,133 INFO L82 PathProgramCache]: Analyzing trace with hash -510101384, now seen corresponding path program 5 times [2021-10-16 02:43:02,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:43:02,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866878265] [2021-10-16 02:43:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:02,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:43:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 790 proven. 6302 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-16 02:43:03,368 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:43:03,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866878265] [2021-10-16 02:43:03,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866878265] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:43:03,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132361181] [2021-10-16 02:43:03,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:43:03,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:43:03,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:43:03,370 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:43:03,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-16 02:43:03,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-16 02:43:03,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:43:03,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:43:03,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:04,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 1045 proven. 65 refuted. 0 times theorem prover too weak. 6030 trivial. 0 not checked. [2021-10-16 02:43:04,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:05,921 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 1045 proven. 65 refuted. 0 times theorem prover too weak. 6030 trivial. 0 not checked. [2021-10-16 02:43:05,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132361181] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:43:05,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2020510528] [2021-10-16 02:43:05,926 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 02:43:05,927 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:43:05,927 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:43:05,928 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:43:05,928 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:43:05,934 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-16 02:43:05,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:43:05,936 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:43:05,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:43:05,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,943 INFO L180 QuantifierPusher]: treesize reduction 22, result has 37.1 percent of original size [2021-10-16 02:43:05,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:43:05,946 INFO L180 QuantifierPusher]: treesize reduction 16, result has 44.8 percent of original size [2021-10-16 02:43:05,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:43:05,951 INFO L180 QuantifierPusher]: treesize reduction 29, result has 3.3 percent of original size [2021-10-16 02:43:05,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:43:05,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,968 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-16 02:43:05,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-16 02:43:05,974 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-16 02:43:05,976 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:43:05,978 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-16 02:43:05,980 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-16 02:43:05,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:05,998 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:43:05,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:43:06,000 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-16 02:43:06,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:43:06,003 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-16 02:43:06,004 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-16 02:43:06,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,016 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:43:06,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:43:06,018 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-16 02:43:06,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:43:06,022 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-16 02:43:06,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:43:06,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,032 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:43:06,039 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:43:06,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,061 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:43:06,063 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-16 02:43:06,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,083 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-16 02:43:06,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:43:06,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,092 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:06,109 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-16 02:43:06,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:43:06,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-16 02:43:06,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 7, 7] total 61 [2021-10-16 02:43:06,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932187131] [2021-10-16 02:43:06,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-10-16 02:43:06,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:43:06,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-10-16 02:43:06,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1894, Invalid=2936, Unknown=0, NotChecked=0, Total=4830 [2021-10-16 02:43:06,628 INFO L87 Difference]: Start difference. First operand 1251 states and 1426 transitions. Second operand has 61 states, 61 states have (on average 5.918032786885246) internal successors, (361), 61 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:07,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:07,157 INFO L93 Difference]: Finished difference Result 3228 states and 3909 transitions. [2021-10-16 02:43:07,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-16 02:43:07,158 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 5.918032786885246) internal successors, (361), 61 states have internal predecessors, (361), 0 states have call successors, (0), 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 306 [2021-10-16 02:43:07,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:07,174 INFO L225 Difference]: With dead ends: 3228 [2021-10-16 02:43:07,175 INFO L226 Difference]: Without dead ends: 2250 [2021-10-16 02:43:07,179 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 896 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 1972.1ms TimeCoverageRelationStatistics Valid=1894, Invalid=2936, Unknown=0, NotChecked=0, Total=4830 [2021-10-16 02:43:07,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2021-10-16 02:43:07,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 2250. [2021-10-16 02:43:07,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2250 states, 2248 states have (on average 1.150355871886121) internal successors, (2586), 2249 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:07,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 2586 transitions. [2021-10-16 02:43:07,303 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 2586 transitions. Word has length 306 [2021-10-16 02:43:07,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:07,304 INFO L470 AbstractCegarLoop]: Abstraction has 2250 states and 2586 transitions. [2021-10-16 02:43:07,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.918032786885246) internal successors, (361), 61 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:07,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 2586 transitions. [2021-10-16 02:43:07,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-10-16 02:43:07,312 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:07,313 INFO L512 BasicCegarLoop]: trace histogram [60, 59, 59, 48, 48, 48, 12, 12, 12, 1, 1] [2021-10-16 02:43:07,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:07,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:43:07,532 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:43:07,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:07,533 INFO L82 PathProgramCache]: Analyzing trace with hash 501858831, now seen corresponding path program 6 times [2021-10-16 02:43:07,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:43:07,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146009691] [2021-10-16 02:43:07,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:07,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:43:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:08,863 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 2182 proven. 6864 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-16 02:43:08,863 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:43:08,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146009691] [2021-10-16 02:43:08,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146009691] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:43:08,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161116604] [2021-10-16 02:43:08,864 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 02:43:08,864 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:43:08,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:43:08,878 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:43:08,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-16 02:43:09,638 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 02:43:09,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:43:09,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-16 02:43:09,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 2182 proven. 6864 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-16 02:43:10,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 2182 proven. 6864 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-16 02:43:12,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161116604] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:43:12,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [154158509] [2021-10-16 02:43:12,084 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 02:43:12,084 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:43:12,084 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:43:12,085 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:43:12,085 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:43:12,096 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-16 02:43:12,096 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:43:12,099 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:43:12,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:43:12,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,107 INFO L180 QuantifierPusher]: treesize reduction 20, result has 39.4 percent of original size [2021-10-16 02:43:12,108 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:43:12,115 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:43:12,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:43:12,117 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-16 02:43:12,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:43:12,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,134 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-16 02:43:12,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-16 02:43:12,138 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-16 02:43:12,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:43:12,142 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-16 02:43:12,144 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-16 02:43:12,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,164 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:43:12,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:43:12,169 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-16 02:43:12,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:43:12,172 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-16 02:43:12,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-16 02:43:12,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,185 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:43:12,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:43:12,188 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-16 02:43:12,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:43:12,190 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-16 02:43:12,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:43:12,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,202 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:43:12,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:43:12,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,228 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:43:12,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-16 02:43:12,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,250 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-16 02:43:12,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:43:12,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:12,271 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-16 02:43:12,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:43:12,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-16 02:43:12,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 52 [2021-10-16 02:43:12,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405825159] [2021-10-16 02:43:12,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-10-16 02:43:12,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:43:12,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-10-16 02:43:12,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1420, Invalid=2362, Unknown=0, NotChecked=0, Total=3782 [2021-10-16 02:43:12,719 INFO L87 Difference]: Start difference. First operand 2250 states and 2586 transitions. Second operand has 53 states, 53 states have (on average 5.886792452830188) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:13,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:13,021 INFO L93 Difference]: Finished difference Result 4233 states and 4908 transitions. [2021-10-16 02:43:13,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-16 02:43:13,022 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.886792452830188) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 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 360 [2021-10-16 02:43:13,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:13,038 INFO L225 Difference]: With dead ends: 4233 [2021-10-16 02:43:13,038 INFO L226 Difference]: Without dead ends: 2268 [2021-10-16 02:43:13,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1128 GetRequests, 1068 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 1520.7ms TimeCoverageRelationStatistics Valid=1420, Invalid=2362, Unknown=0, NotChecked=0, Total=3782 [2021-10-16 02:43:13,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2021-10-16 02:43:13,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 2268. [2021-10-16 02:43:13,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2268 states, 2266 states have (on average 1.1491615180935568) internal successors, (2604), 2267 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:13,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2268 states to 2268 states and 2604 transitions. [2021-10-16 02:43:13,160 INFO L78 Accepts]: Start accepts. Automaton has 2268 states and 2604 transitions. Word has length 360 [2021-10-16 02:43:13,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:13,161 INFO L470 AbstractCegarLoop]: Abstraction has 2268 states and 2604 transitions. [2021-10-16 02:43:13,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.886792452830188) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:13,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2268 states and 2604 transitions. [2021-10-16 02:43:13,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2021-10-16 02:43:13,169 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:13,170 INFO L512 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 62, 62, 1, 1] [2021-10-16 02:43:13,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:13,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable474 [2021-10-16 02:43:13,393 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:43:13,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:13,393 INFO L82 PathProgramCache]: Analyzing trace with hash 812314777, now seen corresponding path program 5 times [2021-10-16 02:43:13,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:43:13,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138989301] [2021-10-16 02:43:13,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:13,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:43:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 11532 backedges. 0 proven. 11532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:15,671 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:43:15,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138989301] [2021-10-16 02:43:15,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138989301] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:43:15,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430492961] [2021-10-16 02:43:15,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:43:15,671 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:43:15,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:43:15,672 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:43:15,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-16 02:43:16,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2021-10-16 02:43:16,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:43:16,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-16 02:43:16,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 11532 backedges. 0 proven. 11532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:17,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 11532 backedges. 0 proven. 11532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:23,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430492961] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:43:23,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1960399392] [2021-10-16 02:43:23,129 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-16 02:43:23,129 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:43:23,130 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:43:23,130 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:43:23,130 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:43:23,142 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:43:23,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:43:23,145 INFO L180 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-10-16 02:43:23,146 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:43:23,148 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:43:23,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:43:23,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,156 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-10-16 02:43:23,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-16 02:43:23,160 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-16 02:43:23,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:43:23,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,171 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:43:23,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:43:23,173 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-16 02:43:23,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:43:23,177 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:43:23,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:43:23,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:23,221 INFO L180 QuantifierPusher]: treesize reduction 9, result has 85.0 percent of original size [2021-10-16 02:43:23,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-16 02:43:23,223 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-16 02:43:26,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:43:26,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-16 02:43:26,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 126 [2021-10-16 02:43:26,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126671363] [2021-10-16 02:43:26,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-10-16 02:43:26,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:43:26,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-10-16 02:43:26,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8148, Invalid=9674, Unknown=0, NotChecked=0, Total=17822 [2021-10-16 02:43:26,210 INFO L87 Difference]: Start difference. First operand 2268 states and 2604 transitions. Second operand has 128 states, 127 states have (on average 5.921259842519685) internal successors, (752), 127 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:29,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:29,932 INFO L93 Difference]: Finished difference Result 69548 states and 81432 transitions. [2021-10-16 02:43:29,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-10-16 02:43:29,948 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 5.921259842519685) internal successors, (752), 127 states have internal predecessors, (752), 0 states have call successors, (0), 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 376 [2021-10-16 02:43:29,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:30,340 INFO L225 Difference]: With dead ends: 69548 [2021-10-16 02:43:30,340 INFO L226 Difference]: Without dead ends: 69547 [2021-10-16 02:43:30,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1189 GetRequests, 994 SyntacticMatches, 63 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13096 ImplicationChecksByTransitivity, 9135.1ms TimeCoverageRelationStatistics Valid=8148, Invalid=9674, Unknown=0, NotChecked=0, Total=17822 [2021-10-16 02:43:30,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69547 states. [2021-10-16 02:43:32,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69547 to 8961. [2021-10-16 02:43:32,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8961 states, 8959 states have (on average 1.1668713026007367) internal successors, (10454), 8960 states have internal predecessors, (10454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8961 states to 8961 states and 10454 transitions. [2021-10-16 02:43:32,638 INFO L78 Accepts]: Start accepts. Automaton has 8961 states and 10454 transitions. Word has length 376 [2021-10-16 02:43:32,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:32,639 INFO L470 AbstractCegarLoop]: Abstraction has 8961 states and 10454 transitions. [2021-10-16 02:43:32,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 5.921259842519685) internal successors, (752), 127 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:32,645 INFO L276 IsEmpty]: Start isEmpty. Operand 8961 states and 10454 transitions. [2021-10-16 02:43:32,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-10-16 02:43:32,656 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:32,656 INFO L512 BasicCegarLoop]: trace histogram [63, 62, 62, 51, 51, 51, 12, 12, 12, 1, 1] [2021-10-16 02:43:32,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:32,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable539 [2021-10-16 02:43:32,881 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:43:32,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:32,881 INFO L82 PathProgramCache]: Analyzing trace with hash 2002951930, now seen corresponding path program 7 times [2021-10-16 02:43:32,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:43:32,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546658260] [2021-10-16 02:43:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:32,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:43:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:35,025 INFO L134 CoverageAnalysis]: Checked inductivity of 10432 backedges. 0 proven. 10432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:35,025 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:43:35,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546658260] [2021-10-16 02:43:35,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546658260] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:43:35,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827848966] [2021-10-16 02:43:35,026 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-16 02:43:35,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:43:35,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:43:35,049 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:43:35,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-16 02:43:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:36,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-16 02:43:36,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:37,235 INFO L134 CoverageAnalysis]: Checked inductivity of 10432 backedges. 0 proven. 10432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:37,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10432 backedges. 0 proven. 10432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:42,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827848966] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:43:42,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1792812557] [2021-10-16 02:43:42,915 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 02:43:42,916 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:43:42,916 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:43:42,916 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:43:42,917 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:43:42,933 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-16 02:43:42,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:43:42,936 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:43:42,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:43:42,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,951 INFO L180 QuantifierPusher]: treesize reduction 20, result has 39.4 percent of original size [2021-10-16 02:43:42,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:43:42,954 INFO L180 QuantifierPusher]: treesize reduction 16, result has 44.8 percent of original size [2021-10-16 02:43:42,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:43:42,957 INFO L180 QuantifierPusher]: treesize reduction 29, result has 3.3 percent of original size [2021-10-16 02:43:42,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:43:42,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,970 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-16 02:43:42,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-16 02:43:42,982 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-16 02:43:42,983 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:43:42,985 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-16 02:43:42,987 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-16 02:43:42,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,003 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:43:43,004 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:43:43,006 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-16 02:43:43,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:43:43,009 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-16 02:43:43,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-16 02:43:43,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,032 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:43:43,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:43:43,038 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-16 02:43:43,039 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:43:43,040 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-16 02:43:43,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:43:43,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,052 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:43:43,053 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:43:43,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,073 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:43:43,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-16 02:43:43,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,093 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-16 02:43:43,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:43:43,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:43,114 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-16 02:43:43,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:43:43,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-16 02:43:43,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 126 [2021-10-16 02:43:43,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122401255] [2021-10-16 02:43:43,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-10-16 02:43:43,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:43:43,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-10-16 02:43:43,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8320, Invalid=10312, Unknown=0, NotChecked=0, Total=18632 [2021-10-16 02:43:43,630 INFO L87 Difference]: Start difference. First operand 8961 states and 10454 transitions. Second operand has 128 states, 127 states have (on average 5.952755905511811) internal successors, (756), 127 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:46,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:46,410 INFO L93 Difference]: Finished difference Result 25114 states and 31990 transitions. [2021-10-16 02:43:46,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-10-16 02:43:46,411 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 5.952755905511811) internal successors, (756), 127 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 378 [2021-10-16 02:43:46,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:46,478 INFO L225 Difference]: With dead ends: 25114 [2021-10-16 02:43:46,478 INFO L226 Difference]: Without dead ends: 25113 [2021-10-16 02:43:46,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1195 GetRequests, 1060 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1733 ImplicationChecksByTransitivity, 6752.7ms TimeCoverageRelationStatistics Valid=8320, Invalid=10312, Unknown=0, NotChecked=0, Total=18632 [2021-10-16 02:43:46,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25113 states. [2021-10-16 02:43:48,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25113 to 25113. [2021-10-16 02:43:48,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25113 states, 25111 states have (on average 1.1647485165863565) internal successors, (29248), 25112 states have internal predecessors, (29248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:48,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25113 states to 25113 states and 29248 transitions. [2021-10-16 02:43:48,085 INFO L78 Accepts]: Start accepts. Automaton has 25113 states and 29248 transitions. Word has length 378 [2021-10-16 02:43:48,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:48,086 INFO L470 AbstractCegarLoop]: Abstraction has 25113 states and 29248 transitions. [2021-10-16 02:43:48,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 5.952755905511811) internal successors, (756), 127 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 25113 states and 29248 transitions. [2021-10-16 02:43:48,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2021-10-16 02:43:48,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:48,164 INFO L512 BasicCegarLoop]: trace histogram [127, 127, 126, 126, 126, 126, 1, 1] [2021-10-16 02:43:48,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:48,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable568 [2021-10-16 02:43:48,381 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:43:48,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:48,381 INFO L82 PathProgramCache]: Analyzing trace with hash 690075353, now seen corresponding path program 6 times [2021-10-16 02:43:48,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:43:48,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995891086] [2021-10-16 02:43:48,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:48,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:43:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:55,715 INFO L134 CoverageAnalysis]: Checked inductivity of 47628 backedges. 0 proven. 47628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:55,716 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:43:55,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995891086] [2021-10-16 02:43:55,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995891086] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:43:55,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473399470] [2021-10-16 02:43:55,717 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 02:43:55,717 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:43:55,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:43:55,719 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:43:55,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-16 02:43:57,248 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 02:43:57,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:43:57,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-16 02:43:57,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 47628 backedges. 30903 proven. 0 refuted. 0 times theorem prover too weak. 16725 trivial. 0 not checked. [2021-10-16 02:44:02,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:04,873 INFO L134 CoverageAnalysis]: Checked inductivity of 47628 backedges. 30903 proven. 0 refuted. 0 times theorem prover too weak. 16725 trivial. 0 not checked. [2021-10-16 02:44:04,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473399470] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:04,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:44:04,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53, 53] imperfect sequences [127] total 180 [2021-10-16 02:44:04,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856133933] [2021-10-16 02:44:04,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-10-16 02:44:04,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:44:04,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-10-16 02:44:04,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9686, Invalid=22894, Unknown=0, NotChecked=0, Total=32580 [2021-10-16 02:44:04,884 INFO L87 Difference]: Start difference. First operand 25113 states and 29248 transitions. Second operand has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:05,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:05,363 INFO L93 Difference]: Finished difference Result 25573 states and 29784 transitions. [2021-10-16 02:44:05,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-16 02:44:05,363 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 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 760 [2021-10-16 02:44:05,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:05,366 INFO L225 Difference]: With dead ends: 25573 [2021-10-16 02:44:05,366 INFO L226 Difference]: Without dead ends: 763 [2021-10-16 02:44:05,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1645 GetRequests, 1465 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6678 ImplicationChecksByTransitivity, 10375.3ms TimeCoverageRelationStatistics Valid=9686, Invalid=22894, Unknown=0, NotChecked=0, Total=32580 [2021-10-16 02:44:05,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2021-10-16 02:44:05,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 763. [2021-10-16 02:44:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 762 states have (on average 1.0013123359580052) internal successors, (763), 762 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:05,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 763 transitions. [2021-10-16 02:44:05,426 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 763 transitions. Word has length 760 [2021-10-16 02:44:05,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:05,427 INFO L470 AbstractCegarLoop]: Abstraction has 763 states and 763 transitions. [2021-10-16 02:44:05,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:05,428 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 763 transitions. [2021-10-16 02:44:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2021-10-16 02:44:05,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:05,458 INFO L512 BasicCegarLoop]: trace histogram [127, 126, 126, 76, 76, 76, 51, 51, 51, 1, 1] [2021-10-16 02:44:05,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:05,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable633 [2021-10-16 02:44:05,682 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:44:05,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:05,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1305009222, now seen corresponding path program 8 times [2021-10-16 02:44:05,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:44:05,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22262815] [2021-10-16 02:44:05,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:05,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:44:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:12,177 INFO L134 CoverageAnalysis]: Checked inductivity of 40128 backedges. 0 proven. 40128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:12,178 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:44:12,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22262815] [2021-10-16 02:44:12,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22262815] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:44:12,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889858652] [2021-10-16 02:44:12,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:44:12,178 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:44:12,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:44:12,179 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:44:12,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-16 02:44:14,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 77 check-sat command(s) [2021-10-16 02:44:14,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:44:14,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 78 conjunts are in the unsatisfiable core [2021-10-16 02:44:14,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 40128 backedges. 15502 proven. 17176 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2021-10-16 02:44:16,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 40128 backedges. 15502 proven. 17176 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2021-10-16 02:44:26,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889858652] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:44:26,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [416370764] [2021-10-16 02:44:26,275 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 02:44:26,275 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:44:26,276 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:44:26,276 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:44:26,276 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:44:26,284 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-16 02:44:26,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:44:26,286 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:44:26,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:44:26,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,297 INFO L180 QuantifierPusher]: treesize reduction 22, result has 37.1 percent of original size [2021-10-16 02:44:26,302 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:44:26,304 INFO L180 QuantifierPusher]: treesize reduction 16, result has 44.8 percent of original size [2021-10-16 02:44:26,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:44:26,306 INFO L180 QuantifierPusher]: treesize reduction 29, result has 3.3 percent of original size [2021-10-16 02:44:26,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:44:26,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,319 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-16 02:44:26,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-16 02:44:26,322 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-16 02:44:26,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:44:26,324 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-16 02:44:26,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-16 02:44:26,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,342 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:44:26,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:44:26,344 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-16 02:44:26,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:44:26,346 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-16 02:44:26,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-16 02:44:26,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,357 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:44:26,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:44:26,359 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-16 02:44:26,360 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:44:26,361 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-16 02:44:26,362 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:44:26,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,369 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:44:26,370 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:44:26,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,385 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:44:26,387 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-16 02:44:26,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,400 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-16 02:44:26,402 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:44:26,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:26,419 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-16 02:44:27,105 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:44:27,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-16 02:44:27,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 78, 78] total 205 [2021-10-16 02:44:27,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178277768] [2021-10-16 02:44:27,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 206 states [2021-10-16 02:44:27,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:44:27,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2021-10-16 02:44:27,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21463, Invalid=24547, Unknown=0, NotChecked=0, Total=46010 [2021-10-16 02:44:27,116 INFO L87 Difference]: Start difference. First operand 763 states and 763 transitions. Second operand has 206 states, 205 states have (on average 6.0) internal successors, (1230), 206 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:31,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:31,383 INFO L93 Difference]: Finished difference Result 1232 states and 1309 transitions. [2021-10-16 02:44:31,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2021-10-16 02:44:31,383 INFO L78 Accepts]: Start accepts. Automaton has has 206 states, 205 states have (on average 6.0) internal successors, (1230), 206 states have internal predecessors, (1230), 0 states have call successors, (0), 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 762 [2021-10-16 02:44:31,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:31,387 INFO L225 Difference]: With dead ends: 1232 [2021-10-16 02:44:31,387 INFO L226 Difference]: Without dead ends: 1231 [2021-10-16 02:44:31,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2411 GetRequests, 2198 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2689 ImplicationChecksByTransitivity, 14942.6ms TimeCoverageRelationStatistics Valid=21463, Invalid=24547, Unknown=0, NotChecked=0, Total=46010 [2021-10-16 02:44:31,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2021-10-16 02:44:31,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1231. [2021-10-16 02:44:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 1230 states have (on average 1.0008130081300812) internal successors, (1231), 1230 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:31,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1231 transitions. [2021-10-16 02:44:31,423 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1231 transitions. Word has length 762 [2021-10-16 02:44:31,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:31,424 INFO L470 AbstractCegarLoop]: Abstraction has 1231 states and 1231 transitions. [2021-10-16 02:44:31,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 206 states, 205 states have (on average 6.0) internal successors, (1230), 206 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:31,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1231 transitions. [2021-10-16 02:44:31,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1231 [2021-10-16 02:44:31,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:31,438 INFO L512 BasicCegarLoop]: trace histogram [205, 204, 204, 154, 154, 154, 51, 51, 51, 1, 1] [2021-10-16 02:44:31,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:31,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable634 [2021-10-16 02:44:31,661 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-16 02:44:31,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:31,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1334028028, now seen corresponding path program 9 times [2021-10-16 02:44:31,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:44:31,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756015428] [2021-10-16 02:44:31,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:31,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:44:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 109548 backedges. 0 proven. 109548 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:46,237 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:44:46,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756015428] [2021-10-16 02:44:46,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756015428] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:44:46,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529452509] [2021-10-16 02:44:46,238 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 02:44:46,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:44:46,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:44:46,239 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:44:46,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-16 02:44:48,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 02:44:48,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:44:48,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 2053 conjuncts, 105 conjunts are in the unsatisfiable core [2021-10-16 02:44:48,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 109548 backedges. 65890 proven. 12752 refuted. 0 times theorem prover too weak. 30906 trivial. 0 not checked. [2021-10-16 02:44:55,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 109548 backedges. 65890 proven. 12752 refuted. 0 times theorem prover too weak. 30906 trivial. 0 not checked. [2021-10-16 02:44:58,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529452509] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:44:58,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2025887830] [2021-10-16 02:44:58,182 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 02:44:58,182 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:44:58,182 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:44:58,182 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:44:58,182 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:44:58,207 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-16 02:44:58,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:44:58,209 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:44:58,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:44:58,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,221 INFO L180 QuantifierPusher]: treesize reduction 22, result has 37.1 percent of original size [2021-10-16 02:44:58,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:44:58,224 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-16 02:44:58,225 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:44:58,226 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-16 02:44:58,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:44:58,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,239 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-16 02:44:58,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-16 02:44:58,242 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-16 02:44:58,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:44:58,245 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-16 02:44:58,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-16 02:44:58,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,260 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-16 02:44:58,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-16 02:44:58,262 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-16 02:44:58,263 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:44:58,265 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-16 02:44:58,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-16 02:44:58,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,276 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:44:58,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:44:58,278 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-16 02:44:58,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-16 02:44:58,280 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-16 02:44:58,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:44:58,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,288 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-16 02:44:58,289 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-16 02:44:58,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,306 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:44:58,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-16 02:44:58,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,323 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-16 02:44:58,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:44:58,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:44:58,339 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-16 02:44:59,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:44:59,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-16 02:44:59,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [205, 54, 54] total 259 [2021-10-16 02:44:59,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50692940] [2021-10-16 02:44:59,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 260 states [2021-10-16 02:44:59,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:44:59,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 260 interpolants. [2021-10-16 02:44:59,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23155, Invalid=48937, Unknown=0, NotChecked=0, Total=72092 [2021-10-16 02:44:59,343 INFO L87 Difference]: Start difference. First operand 1231 states and 1231 transitions. Second operand has 260 states, 260 states have (on average 6.561538461538461) internal successors, (1706), 259 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:45:13,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:45:13,716 INFO L93 Difference]: Finished difference Result 1231 states and 1231 transitions. [2021-10-16 02:45:13,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2021-10-16 02:45:13,720 INFO L78 Accepts]: Start accepts. Automaton has has 260 states, 260 states have (on average 6.561538461538461) internal successors, (1706), 259 states have internal predecessors, (1706), 0 states have call successors, (0), 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 1230 [2021-10-16 02:45:13,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:45:13,724 INFO L225 Difference]: With dead ends: 1231 [2021-10-16 02:45:13,725 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:45:13,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4100 GetRequests, 3625 SyntacticMatches, 1 SemanticMatches, 474 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36362 ImplicationChecksByTransitivity, 28669.3ms TimeCoverageRelationStatistics Valid=71518, Invalid=154582, Unknown=0, NotChecked=0, Total=226100 [2021-10-16 02:45:13,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:45:13,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:45:13,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:45:13,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:45:13,747 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1230 [2021-10-16 02:45:13,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:45:13,747 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:45:13,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 260 states, 260 states have (on average 6.561538461538461) internal successors, (1706), 259 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:45:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:45:13,749 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:45:13,751 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:45:13,752 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:45:13,752 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:45:13,752 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:45:13,752 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:45:13,753 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:45:13,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:45:13,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable699,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:45:13,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:45:13,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:20,697 WARN L207 SmtUtils]: Spent 5.51 s on a formula simplification. DAG size of input: 1108 DAG size of output: 390 [2021-10-16 02:45:20,708 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-16 02:45:20,708 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:45:20,708 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-16 02:45:20,708 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-10-16 02:45:20,708 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2021-10-16 02:45:20,708 INFO L857 garLoopResultBuilder]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2021-10-16 02:45:20,708 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-16 02:45:20,708 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-16 02:45:20,709 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:45:20,709 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-10-16 02:45:20,709 INFO L857 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-10-16 02:45:20,709 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-16 02:45:20,709 INFO L857 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-10-16 02:45:20,709 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-16 02:45:20,709 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-16 02:45:20,710 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 18 25) the Hoare annotation is: (let ((.cse6 (<= ULTIMATE.start_main_~y~0 21)) (.cse10 (<= ULTIMATE.start_main_~y~0 31)) (.cse7 (<= ULTIMATE.start_main_~y~0 30)) (.cse20 (<= ULTIMATE.start_main_~y~0 25)) (.cse8 (<= ULTIMATE.start_main_~x~0 35)) (.cse14 (<= ULTIMATE.start_main_~y~0 20)) (.cse0 (<= ULTIMATE.start_main_~y~0 9)) (.cse18 (<= ULTIMATE.start_main_~y~0 15)) (.cse27 (<= ULTIMATE.start_main_~y~0 39)) (.cse32 (<= ULTIMATE.start_main_~y~0 42)) (.cse35 (<= ULTIMATE.start_main_~y~0 40)) (.cse21 (<= ULTIMATE.start_main_~y~0 46)) (.cse29 (<= ULTIMATE.start_main_~y~0 34)) (.cse31 (<= ULTIMATE.start_main_~y~0 4)) (.cse11 (<= ULTIMATE.start_main_~y~0 18)) (.cse30 (<= ULTIMATE.start_main_~y~0 43)) (.cse33 (<= ULTIMATE.start_main_~y~0 36)) (.cse19 (<= ULTIMATE.start_main_~x~0 44)) (.cse13 (<= ULTIMATE.start_main_~y~0 45)) (.cse26 (<= ULTIMATE.start_main_~y~0 10)) (.cse12 (<= ULTIMATE.start_main_~y~0 22)) (.cse41 (<= ULTIMATE.start_main_~y~0 3)) (.cse37 (<= ULTIMATE.start_main_~x~0 40)) (.cse44 (<= ULTIMATE.start_main_~y~0 1)) (.cse16 (<= ULTIMATE.start_main_~y~0 7)) (.cse22 (<= ULTIMATE.start_main_~y~0 0)) (.cse28 (<= ULTIMATE.start_main_~y~0 26)) (.cse40 (<= ULTIMATE.start_main_~y~0 14)) (.cse4 (<= ULTIMATE.start_main_~y~0 32)) (.cse17 (<= ULTIMATE.start_main_~y~0 37)) (.cse38 (<= ULTIMATE.start_main_~y~0 33)) (.cse49 (<= ULTIMATE.start_main_~y~0 27)) (.cse39 (<= ULTIMATE.start_main_~y~0 38)) (.cse42 (<= ULTIMATE.start_main_~y~0 44)) (.cse47 (<= ULTIMATE.start_main_~y~0 11)) (.cse45 (<= ULTIMATE.start_main_~y~0 48)) (.cse43 (<= ULTIMATE.start_main_~y~0 28)) (.cse9 (<= ULTIMATE.start_main_~y~0 19)) (.cse48 (<= ULTIMATE.start_main_~y~0 12)) (.cse15 (<= ULTIMATE.start_main_~y~0 6)) (.cse51 (<= ULTIMATE.start_main_~y~0 13)) (.cse5 (<= ULTIMATE.start_main_~y~0 2)) (.cse34 (<= ULTIMATE.start_main_~y~0 8)) (.cse23 (<= ULTIMATE.start_main_~y~0 41)) (.cse54 (<= ULTIMATE.start_main_~y~0 50)) (.cse50 (<= ULTIMATE.start_main_~y~0 17)) (.cse52 (<= ULTIMATE.start_main_~y~0 5)) (.cse2 (<= ULTIMATE.start_main_~y~0 49)) (.cse55 (<= ULTIMATE.start_main_~y~0 29)) (.cse46 (<= ULTIMATE.start_main_~y~0 23)) (.cse25 (<= ULTIMATE.start_main_~y~0 35)) (.cse3 (<= 51 ULTIMATE.start_main_~x~0)) (.cse36 (<= ULTIMATE.start_main_~y~0 16)) (.cse24 (<= ULTIMATE.start_main_~y~0 47)) (.cse1 (<= ULTIMATE.start_main_~x~0 51)) (.cse53 (<= ULTIMATE.start_main_~y~0 24)) (.cse56 (<= ULTIMATE.start_main_~x~0 29))) (or (and .cse0 .cse1 (<= 9 ULTIMATE.start_main_~x~0)) (and .cse2 (<= ULTIMATE.start_main_~x~0 53) .cse3) (and (<= 32 ULTIMATE.start_main_~x~0) .cse1 .cse4) (and .cse5 .cse3 (<= ULTIMATE.start_main_~x~0 100)) (and .cse6 (<= ULTIMATE.start_main_~x~0 81) .cse3) (and (<= 30 ULTIMATE.start_main_~x~0) .cse7 .cse8) (and (<= ULTIMATE.start_main_~x~0 83) .cse3 .cse9) (and .cse10 (<= ULTIMATE.start_main_~x~0 71) .cse3) (and .cse11 .cse3 (<= ULTIMATE.start_main_~x~0 84)) (and (<= ULTIMATE.start_main_~x~0 80) .cse12 .cse3) (and .cse13 (<= ULTIMATE.start_main_~x~0 57) .cse3) (and (<= 21 ULTIMATE.start_main_~x~0) .cse6 .cse1) (and (<= ULTIMATE.start_main_~x~0 82) .cse14 .cse3) (and .cse15 (<= ULTIMATE.start_main_~x~0 96) .cse3) (and (<= 31 ULTIMATE.start_main_~x~0) .cse10 .cse1) (and .cse7 (<= ULTIMATE.start_main_~x~0 72) .cse3) (and .cse16 .cse1 (<= 7 ULTIMATE.start_main_~x~0)) (and .cse17 (<= 37 ULTIMATE.start_main_~x~0) .cse1) (and .cse18 (<= 15 ULTIMATE.start_main_~x~0) .cse19) (and .cse20 .cse3 (<= ULTIMATE.start_main_~x~0 77)) (and .cse21 (<= 46 ULTIMATE.start_main_~x~0) .cse1) (and .cse22 .cse3 (<= ULTIMATE.start_main_~x~0 102)) (and (<= 25 ULTIMATE.start_main_~x~0) .cse20 (<= ULTIMATE.start_main_~x~0 25)) (and (<= 41 ULTIMATE.start_main_~x~0) .cse23 .cse1) (and (<= ULTIMATE.start_main_~x~0 55) .cse24 .cse3) (and .cse25 (<= 35 ULTIMATE.start_main_~x~0) .cse8) (and (<= ULTIMATE.start_main_~x~0 92) .cse3 .cse26) (and (<= 20 ULTIMATE.start_main_~x~0) .cse14 .cse1) (and (<= ULTIMATE.start_main_~x~0 93) .cse0 .cse3) (and (<= 39 ULTIMATE.start_main_~x~0) .cse27 .cse19) (and .cse3 (<= ULTIMATE.start_main_~x~0 76) .cse28) (and .cse29 (<= 34 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 34)) (and .cse18 (<= ULTIMATE.start_main_~x~0 87) .cse3) (and .cse30 .cse1 (<= 43 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 63) .cse27 .cse3) (and (<= 4 ULTIMATE.start_main_~x~0) .cse31 .cse1) (and .cse32 .cse1 (<= 42 ULTIMATE.start_main_~x~0)) (and .cse33 .cse1 (<= 36 ULTIMATE.start_main_~x~0)) (and (<= 8 ULTIMATE.start_main_~x~0) .cse1 .cse34) (and .cse35 (<= ULTIMATE.start_main_~x~0 62) .cse3) (and .cse32 (<= ULTIMATE.start_main_~x~0 60) .cse3) (and .cse36 .cse3 (<= ULTIMATE.start_main_~x~0 86)) (and .cse35 .cse37 (<= 40 ULTIMATE.start_main_~x~0)) (and .cse38 (<= ULTIMATE.start_main_~x~0 69) .cse3) (and .cse21 (<= ULTIMATE.start_main_~x~0 56) .cse3) (and .cse29 .cse3 (<= ULTIMATE.start_main_~x~0 68)) (and .cse31 (<= ULTIMATE.start_main_~x~0 98) .cse3) (and (<= ULTIMATE.start_main_~x~0 64) .cse39 .cse3) (and (<= 18 ULTIMATE.start_main_~x~0) .cse11 .cse1) (and .cse40 .cse1 (<= 14 ULTIMATE.start_main_~x~0)) (and .cse30 (<= ULTIMATE.start_main_~x~0 59) .cse3) (and (<= ULTIMATE.start_main_~x~0 66) .cse33 .cse3) (and (<= (+ ULTIMATE.start_main_~y~0 1) 0) (<= ULTIMATE.start_main_~x~0 103) .cse3) (and (<= ULTIMATE.start_main_~x~0 99) .cse41 .cse3) (and .cse42 (<= 44 ULTIMATE.start_main_~x~0) .cse19) (and (<= 28 ULTIMATE.start_main_~x~0) .cse1 .cse43) (and (<= ULTIMATE.start_main_~x~0 101) .cse3 .cse44) (and .cse13 (<= 45 ULTIMATE.start_main_~x~0) .cse1) (and (<= 10 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 10) .cse26) (and .cse12 (<= 22 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 22)) (and .cse3 (<= ULTIMATE.start_main_~x~0 54) .cse45) (and (<= ULTIMATE.start_main_~x~0 3) .cse41 (<= 3 ULTIMATE.start_main_~x~0)) (and (<= 23 ULTIMATE.start_main_~x~0) .cse46 .cse1) (and (<= 11 ULTIMATE.start_main_~x~0) .cse37 .cse47) (and (<= ULTIMATE.start_main_~x~0 1) (<= 1 ULTIMATE.start_main_~x~0) .cse44) (and .cse16 .cse3 (<= ULTIMATE.start_main_~x~0 95)) (and .cse48 .cse1 (<= 12 ULTIMATE.start_main_~x~0)) (and .cse49 (<= 27 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 27)) (and (<= ULTIMATE.start_main_~x~0 0) .cse22 (<= 0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~x~0)) (and (<= 26 ULTIMATE.start_main_~x~0) .cse1 .cse28) (and .cse1 .cse3 (<= ULTIMATE.start_main_~y~0 51)) (and .cse40 (<= ULTIMATE.start_main_~x~0 88) .cse3) (and .cse50 (<= 17 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 17)) (and (<= ULTIMATE.start_main_~x~0 70) .cse3 .cse4) (and .cse51 (<= 13 ULTIMATE.start_main_~x~0) .cse1) (and .cse17 (<= ULTIMATE.start_main_~x~0 65) .cse3) (and .cse38 (<= 33 ULTIMATE.start_main_~x~0) .cse1) (and .cse49 .cse3 (<= ULTIMATE.start_main_~x~0 75)) (and (<= 38 ULTIMATE.start_main_~x~0) .cse1 .cse39) (and .cse42 .cse3 (<= ULTIMATE.start_main_~x~0 58)) (and .cse52 (<= ULTIMATE.start_main_~x~0 97) .cse3) (and (<= ULTIMATE.start_main_~x~0 91) .cse3 .cse47) (and (<= 48 ULTIMATE.start_main_~x~0) .cse1 .cse45) (and (<= ULTIMATE.start_main_~x~0 74) .cse3 .cse43) (and (<= 19 ULTIMATE.start_main_~x~0) .cse1 .cse9) (and .cse48 (<= ULTIMATE.start_main_~x~0 90) .cse3) (and .cse15 (<= 6 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 6)) (and .cse51 .cse3 (<= ULTIMATE.start_main_~x~0 89)) (and .cse53 (<= ULTIMATE.start_main_~x~0 78) .cse3) (and (<= 2 ULTIMATE.start_main_~x~0) .cse5 (<= ULTIMATE.start_main_~x~0 2)) (and (<= ULTIMATE.start_main_~x~0 94) .cse3 .cse34) (and .cse23 (<= ULTIMATE.start_main_~x~0 61) .cse3) (and (<= ULTIMATE.start_main_~x~0 52) .cse54 .cse3) (and .cse1 .cse54 (<= 50 ULTIMATE.start_main_~x~0)) (and .cse50 (<= ULTIMATE.start_main_~x~0 85) .cse3) (and .cse55 (<= 29 ULTIMATE.start_main_~x~0) .cse56) (and (<= 5 ULTIMATE.start_main_~x~0) .cse52 .cse1) (and .cse2 (<= 49 ULTIMATE.start_main_~x~0) .cse1) (and (<= ULTIMATE.start_main_~x~0 73) .cse55 .cse3) (and .cse46 .cse3 (<= ULTIMATE.start_main_~x~0 79)) (and .cse25 .cse3 (<= ULTIMATE.start_main_~x~0 67)) (and .cse36 (<= 16 ULTIMATE.start_main_~x~0) .cse1) (and (<= 47 ULTIMATE.start_main_~x~0) .cse24 .cse1) (and .cse53 (<= 24 ULTIMATE.start_main_~x~0) .cse56))) [2021-10-16 02:45:20,714 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:45:20,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:45:20 BoogieIcfgContainer [2021-10-16 02:45:20,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:45:20,755 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:45:20,755 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:45:20,755 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:45:20,756 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:42:39" (3/4) ... [2021-10-16 02:45:20,759 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:45:20,773 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-16 02:45:20,773 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-16 02:45:20,773 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:45:20,821 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:45:20,822 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:45:20,822 INFO L168 Benchmark]: Toolchain (without parser) took 161987.58 ms. Allocated memory was 102.8 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 62.1 MB in the beginning and 673.9 MB in the end (delta: -611.8 MB). Peak memory consumption was 942.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:45:20,823 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 102.8 MB. Free memory is still 78.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:45:20,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.53 ms. Allocated memory is still 102.8 MB. Free memory was 61.9 MB in the beginning and 80.3 MB in the end (delta: -18.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:45:20,823 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.04 ms. Allocated memory is still 102.8 MB. Free memory was 80.3 MB in the beginning and 79.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:45:20,823 INFO L168 Benchmark]: Boogie Preprocessor took 23.84 ms. Allocated memory is still 102.8 MB. Free memory was 79.0 MB in the beginning and 78.3 MB in the end (delta: 650.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:45:20,823 INFO L168 Benchmark]: RCFGBuilder took 301.70 ms. Allocated memory is still 102.8 MB. Free memory was 77.9 MB in the beginning and 69.1 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:45:20,824 INFO L168 Benchmark]: TraceAbstraction took 161267.07 ms. Allocated memory was 102.8 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 68.7 MB in the beginning and 677.0 MB in the end (delta: -608.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 16.1 GB. [2021-10-16 02:45:20,824 INFO L168 Benchmark]: Witness Printer took 66.89 ms. Allocated memory is still 1.7 GB. Free memory was 677.0 MB in the beginning and 673.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:45:20,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 102.8 MB. Free memory is still 78.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.53 ms. Allocated memory is still 102.8 MB. Free memory was 61.9 MB in the beginning and 80.3 MB in the end (delta: -18.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.04 ms. Allocated memory is still 102.8 MB. Free memory was 80.3 MB in the beginning and 79.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.84 ms. Allocated memory is still 102.8 MB. Free memory was 79.0 MB in the beginning and 78.3 MB in the end (delta: 650.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 301.70 ms. Allocated memory is still 102.8 MB. Free memory was 77.9 MB in the beginning and 69.1 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 161267.07 ms. Allocated memory was 102.8 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 68.7 MB in the beginning and 677.0 MB in the end (delta: -608.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 16.1 GB. * Witness Printer took 66.89 ms. Allocated memory is still 1.7 GB. Free memory was 677.0 MB in the beginning and 673.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 161148.6ms, OverallIterations: 20, TraceHistogramMax: 205, EmptinessCheckTime: 194.6ms, AutomataDifference: 29462.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 6726.5ms, InitialAbstractionConstructionTime: 13.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 449 SDtfs, 6921 SDslu, 3608 SDs, 0 SdLazy, 6779 SolverSat, 1385 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4155.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14713 GetRequests, 13050 SyntacticMatches, 123 SemanticMatches, 1540 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67696 ImplicationChecksByTransitivity, 81103.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=25113occurred in iteration=17, InterpolantAutomatonStates: 1073, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 4554.2ms AutomataMinimizationTime, 20 MinimizatonAttempts, 62104 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 105 NumberOfFragments, 1046 HoareAnnotationTreeSize, 1 FomulaSimplifications, 1357 FormulaSimplificationTreeSizeReduction, 1191.4ms HoareSimplificationTime, 1 FomulaSimplificationsInter, 17358 FormulaSimplificationTreeSizeReductionInter, 5518.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 230.0ms SsaConstructionTime, 2502.1ms SatisfiabilityAnalysisTime, 90916.8ms InterpolantComputationTime, 9688 NumberOfCodeBlocks, 9436 NumberOfCodeBlocksAsserted, 195 NumberOfCheckSat, 14470 ConstructedInterpolants, 0 QuantifiedInterpolants, 35908 SizeOfPredicates, 0 NumberOfNonLiveVariables, 7680 ConjunctsInSsa, 530 ConjunctsInUnsatCore, 52 InterpolantComputations, 6 PerfectInterpolantSequences, 359726/725349 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((y <= 9 && x <= 51) && 9 <= x) || ((y <= 49 && x <= 53) && 51 <= x)) || ((32 <= x && x <= 51) && y <= 32)) || ((y <= 2 && 51 <= x) && x <= 100)) || ((y <= 21 && x <= 81) && 51 <= x)) || ((30 <= x && y <= 30) && x <= 35)) || ((x <= 83 && 51 <= x) && y <= 19)) || ((y <= 31 && x <= 71) && 51 <= x)) || ((y <= 18 && 51 <= x) && x <= 84)) || ((x <= 80 && y <= 22) && 51 <= x)) || ((y <= 45 && x <= 57) && 51 <= x)) || ((21 <= x && y <= 21) && x <= 51)) || ((x <= 82 && y <= 20) && 51 <= x)) || ((y <= 6 && x <= 96) && 51 <= x)) || ((31 <= x && y <= 31) && x <= 51)) || ((y <= 30 && x <= 72) && 51 <= x)) || ((y <= 7 && x <= 51) && 7 <= x)) || ((y <= 37 && 37 <= x) && x <= 51)) || ((y <= 15 && 15 <= x) && x <= 44)) || ((y <= 25 && 51 <= x) && x <= 77)) || ((y <= 46 && 46 <= x) && x <= 51)) || ((y <= 0 && 51 <= x) && x <= 102)) || ((25 <= x && y <= 25) && x <= 25)) || ((41 <= x && y <= 41) && x <= 51)) || ((x <= 55 && y <= 47) && 51 <= x)) || ((y <= 35 && 35 <= x) && x <= 35)) || ((x <= 92 && 51 <= x) && y <= 10)) || ((20 <= x && y <= 20) && x <= 51)) || ((x <= 93 && y <= 9) && 51 <= x)) || ((39 <= x && y <= 39) && x <= 44)) || ((51 <= x && x <= 76) && y <= 26)) || ((y <= 34 && 34 <= x) && x <= 34)) || ((y <= 15 && x <= 87) && 51 <= x)) || ((y <= 43 && x <= 51) && 43 <= x)) || ((x <= 63 && y <= 39) && 51 <= x)) || ((4 <= x && y <= 4) && x <= 51)) || ((y <= 42 && x <= 51) && 42 <= x)) || ((y <= 36 && x <= 51) && 36 <= x)) || ((8 <= x && x <= 51) && y <= 8)) || ((y <= 40 && x <= 62) && 51 <= x)) || ((y <= 42 && x <= 60) && 51 <= x)) || ((y <= 16 && 51 <= x) && x <= 86)) || ((y <= 40 && x <= 40) && 40 <= x)) || ((y <= 33 && x <= 69) && 51 <= x)) || ((y <= 46 && x <= 56) && 51 <= x)) || ((y <= 34 && 51 <= x) && x <= 68)) || ((y <= 4 && x <= 98) && 51 <= x)) || ((x <= 64 && y <= 38) && 51 <= x)) || ((18 <= x && y <= 18) && x <= 51)) || ((y <= 14 && x <= 51) && 14 <= x)) || ((y <= 43 && x <= 59) && 51 <= x)) || ((x <= 66 && y <= 36) && 51 <= x)) || ((y + 1 <= 0 && x <= 103) && 51 <= x)) || ((x <= 99 && y <= 3) && 51 <= x)) || ((y <= 44 && 44 <= x) && x <= 44)) || ((28 <= x && x <= 51) && y <= 28)) || ((x <= 101 && 51 <= x) && y <= 1)) || ((y <= 45 && 45 <= x) && x <= 51)) || ((10 <= x && x <= 10) && y <= 10)) || ((y <= 22 && 22 <= x) && x <= 22)) || ((51 <= x && x <= 54) && y <= 48)) || ((x <= 3 && y <= 3) && 3 <= x)) || ((23 <= x && y <= 23) && x <= 51)) || ((11 <= x && x <= 40) && y <= 11)) || ((x <= 1 && 1 <= x) && y <= 1)) || ((y <= 7 && 51 <= x) && x <= 95)) || ((y <= 12 && x <= 51) && 12 <= x)) || ((y <= 27 && 27 <= x) && x <= 27)) || (((x <= 0 && y <= 0) && 0 <= y) && 0 <= x)) || ((26 <= x && x <= 51) && y <= 26)) || ((x <= 51 && 51 <= x) && y <= 51)) || ((y <= 14 && x <= 88) && 51 <= x)) || ((y <= 17 && 17 <= x) && x <= 17)) || ((x <= 70 && 51 <= x) && y <= 32)) || ((y <= 13 && 13 <= x) && x <= 51)) || ((y <= 37 && x <= 65) && 51 <= x)) || ((y <= 33 && 33 <= x) && x <= 51)) || ((y <= 27 && 51 <= x) && x <= 75)) || ((38 <= x && x <= 51) && y <= 38)) || ((y <= 44 && 51 <= x) && x <= 58)) || ((y <= 5 && x <= 97) && 51 <= x)) || ((x <= 91 && 51 <= x) && y <= 11)) || ((48 <= x && x <= 51) && y <= 48)) || ((x <= 74 && 51 <= x) && y <= 28)) || ((19 <= x && x <= 51) && y <= 19)) || ((y <= 12 && x <= 90) && 51 <= x)) || ((y <= 6 && 6 <= x) && x <= 6)) || ((y <= 13 && 51 <= x) && x <= 89)) || ((y <= 24 && x <= 78) && 51 <= x)) || ((2 <= x && y <= 2) && x <= 2)) || ((x <= 94 && 51 <= x) && y <= 8)) || ((y <= 41 && x <= 61) && 51 <= x)) || ((x <= 52 && y <= 50) && 51 <= x)) || ((x <= 51 && y <= 50) && 50 <= x)) || ((y <= 17 && x <= 85) && 51 <= x)) || ((y <= 29 && 29 <= x) && x <= 29)) || ((5 <= x && y <= 5) && x <= 51)) || ((y <= 49 && 49 <= x) && x <= 51)) || ((x <= 73 && y <= 29) && 51 <= x)) || ((y <= 23 && 51 <= x) && x <= 79)) || ((y <= 35 && 51 <= x) && x <= 67)) || ((y <= 16 && 16 <= x) && x <= 51)) || ((47 <= x && y <= 47) && x <= 51)) || ((y <= 24 && 24 <= x) && x <= 29) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:45:20,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_682d177d-5b5e-4937-803b-195178d267f9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...